f | 1 | [Path 1]: | f | 1 | [Path 1]:
n | 2 | 0: Start of execution: Beginning Search | n | 2 | 0: Start of execution: Beginning Search
| 3 | 1: Searching: query |  | 3 | 1: Searching: query
| 4 | 2: Searching: performed_together(robert_plant, ernest_chataway) |  | 4 | 2: Searching: performed_together(robert_plant, ernest_chataway)
| 5 | 3: Searching: performance_history(robert_plant, Candidate Variable_0, Candidate Variable_1) |  | 5 | 3: Searching: performance_history(robert_plant, Candidate Variable_0, Candidate Variable_1)
| 6 | 4: Searching: performance_history(robert_plant, led_zeppelin_years, solo_career) |  | 6 | 4: Found: performance_history(robert_plant, led_zeppelin_years, solo_career)
| 7 | 5: Searching: performance_history(ernest_chataway, collaboration_with, recording_history) |  | 7 | 5: Searching: performance_history(ernest_chataway, Candidate Variable_2, Candidate Variable_3)
| 8 | 6: Searching: performance_history(ernest_chataway, collaboration_with, recording_history) |  | 8 | 6: Found: performance_history(ernest_chataway, collaboration_with, recording_history)
| 9 | 7: Searching: member(robert_plant, collaboration_with) |  | 9 | 7: Searching: lists:member
| 10 | 8: Fail: member(robert_plant, collaboration_with) | {'Result': 'Search Failed'} |  | 10 | 8: Fail: lists:member | {'Result': 'Search Failed'}
|  |  |  | 11 | 9: Fail: performed_together(robert_plant, ernest_chataway) | {'Result': 'Search Failed'}
| 11 |  |  | 12 |
n | 12 | Looking for other paths: Redo: performance_history(ernest_chataway, collaboration_with, recording_history) | n | 13 | Looking for other paths: Redo: query
| 13 |  |  | 14 |
| 14 |  |  | 15 |
| 15 | [Path 2]: |  | 16 | [Path 2]:
n | 16 | 9: Searching: performance_history(ernest_chataway, collaboration_with, recording_history) | n | 17 | 10: Searching: mutual_venue(Candidate Variable_4)
| 17 | 10: Searching: member(robert_plant, collaboration_with) |  | 18 | 11: Searching: venue_appearance(robert_plant, Candidate Variable_5)
| 18 | 11: Fail: member(robert_plant, collaboration_with) | {'Result': 'Search Failed'} |  | 19 | 12: Searching: performance_history(robert_plant, Candidate Variable_6, Candidate Variable_7)
| 19 | 12: Fail: performed_together(robert_plant, ernest_chataway) | {'Result': 'Search Failed'} |  | 20 | 13: Found: performance_history(robert_plant, led_zeppelin_years, solo_career)
|  |  |  | 21 | 14: Searching: lists:member
|  |  |  | 22 | 15: Fail: lists:member | {'Result': 'Search Failed'}
|  |  |  | 23 | 16: Fail: venue_appearance(robert_plant, Candidate Variable_5) | {'Result': 'Search Failed'}
|  |  |  | 24 | 17: Fail: mutual_venue(Candidate Variable_8) | {'Result': 'Search Failed'}
| 20 | 13: Fail: query | {'Result': 'Search Failed'} |  | 25 | 18: Fail: query | {'Result': 'Search Failed'}
| 21 |  |  | 26 |
t | 22 |  | t |  |
| 23 | Looking for other paths: Redo: performance_history(robert_plant, Candidate Variable_0, Candidate Variable_1) |  |  |
| 24 |  |  |  |
| 25 |  |  |  |
| 26 | [Path 3]: |  |  |
| 27 | 14: Searching: performance_history(robert_plant, led_zeppelin_years, solo_career) |  |  |
| 28 | 15: Searching: performance_history(ernest_chataway, collaboration_with, recording_history) |  |  |
| 29 | 16: Searching: performance_history(ernest_chataway, collaboration_with, recording_history) |  |  |
| 30 | 17: Searching: member(robert_plant, collaboration_with) |  |  |
| 31 | 18: Fail: member(robert_plant, collaboration_with) | {'Result': 'Search Failed'} |  |  |
| 32 | 19: Fail: performed_together(robert_plant, ernest_chataway) | {'Result': 'Search Failed'} |  |  |
| 33 | 20: Fail: query | {'Result': 'Search Failed'} |  |  |
| 34 |  |  |  |
| 35 |  |  |  |
| 36 | Looking for other paths: Redo: performance_history(robert_plant, Candidate Variable_0, Candidate Variable_1) |  |  |
| 37 |  |  |  |
| 38 |  |  |  |
| 39 | [Path 4]: |  |  |
| 40 | 21: Searching: performance_history(robert_plant, led_zeppelin_years, solo_career) |  |  |
| 41 | 22: Searching: performance_history(ernest_chataway, collaboration_with, recording_history) |  |  |
| 42 | 23: Searching: performance_history(ernest_chataway, collaboration_with, recording_history) |  |  |
| 43 | 24: Searching: member(robert_plant, collaboration_with) |  |  |
| 44 | 25: Fail: member(robert_plant, collaboration_with) | {'Result': 'Search Failed'} |  |  |
| 45 | 26: Fail: performed_together(robert_plant, ernest_chataway) | {'Result': 'Search Failed'} |  |  |
| 46 | 27: Fail: query | {'Result': 'Search Failed'} |  |  |
| 47 |  |  |  |
| 48 |  |  |  |
| 49 | Looking for other paths: Redo: mutual_venue(_) |  |  |
| 50 |  |  |  |
| 51 |  |  |  |
| 52 | [Path 5]: |  |  |
| 53 | 28: Searching: venue_appearance(robert_plant, Candidate Variable_2) |  |  |
| 54 | 29: Searching: performance_history(robert_plant, _, Venues) |  |  |
| 55 | 30: Searching: performance_history(robert_plant, led_zeppelin_years, solo_career) |  |  |
| 56 | 31: Searching: member(Candidate Variable_2, solo_career) |  |  |
| 57 | 32: Fail: member(Candidate Variable_2, solo_career) | {'Result': 'Search Failed'} |  |  |
| 58 |  |  |  |
| 59 | Looking for other paths: Redo: performance_history(robert_plant, _, Venues) |  |  |
| 60 |  |  |  |
| 61 |  |  |  |
| 62 | [Path 6]: |  |  |
| 63 | 33: Searching: performance_history(robert_plant, led_zeppelin_years, solo_career) |  |  |
| 64 | 34: Searching: member(Candidate Variable_3, led_zeppelin_years) |  |  |
| 65 | 35: Fail: member(Candidate Variable_3, led_zeppelin_years) | {'Result': 'Search Failed'} |  |  |
| 66 |  |  |  |
| 67 | Looking for other paths: Redo: member(Candidate Variable_2, solo_career) |  |  |
| 68 |  |  |  |
| 69 |  |  |  |
| 70 | [Path 7]: |  |  |
| 71 | 36: Redo: member(Candidate Variable_2, solo_career) |  |  |
| 72 | 37: Searching: member(Candidate Variable_2, solo_career) |  |  |
| 73 | 38: Searching: venue_appearance(ernest |  |  |

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