f | 1 | [Path 1]: | f | 1 | [Path 1]:
| 2 | 0: Start of execution: Beginning Search |  | 2 | 0: Start of execution: Beginning Search
| 3 | 1: Searching: query |  | 3 | 1: Searching: query
| 4 | 2: Searching: half_sibling(mickey, george) |  | 4 | 2: Searching: half_sibling(mickey, george)
| 5 | 3: Searching: parent(Candidate Variable_0, mickey) |  | 5 | 3: Searching: parent(Candidate Variable_0, mickey)
| 6 | 4: Found: parent(chuck, mickey) |  | 6 | 4: Found: parent(chuck, mickey)
n | 7 | 5: Searching: parent(Candidate Variable_0, george) | n | 7 | 5: Searching: parent(chuck, george)
| 8 | 6: Found: parent(david, george) |  | 8 | 6: Fail: parent(chuck, george) | {'Result': 'Search Failed'}
| 9 | 7: Searching: Candidate Variable_0=chuck |  | 9 | 7: Fail: half_sibling(mickey, george) | {'Result': 'Search Failed'}
| 10 | 8: Fail: chuck=chuck | {'Result': 'Search Failed'} |  | 10 | 8: Fail: query | {'Result': 'Search Failed'}
| 11 | 9: Redo: parent(Candidate Variable_1, mickey) |  |  |
| 12 |  |  | 11 |
t | 13 |  | t |  |
| 14 | [Path 2]: |  |  |
| 15 | 10: Found: parent(chuck, sara) |  |  |
| 16 | 11: Searching: parent(Candidate Variable_1, george) |  |  |
| 17 | 12: Fail: parent(chuck, george) | {'Result': 'Search Failed'} |  |  |
| 18 | 13: Fail: half_sibling(mickey, george) | {'Result': 'Search Failed'} |  |  |
| 19 | 14: Fail: query | {'Result': 'Search Failed'} |  |  |
| 20 |  |  |  |
| 21 |  |  |  |
| 22 | Looking for other paths: Redo: parent(Candidate Variable_2, sara) |  |  |
| 23 |  |  |  |
| 24 |  |  |  |
| 25 | [Path 3]: |  |  |
| 26 | 15: Searching: parent(Candidate Variable_2, mickey) |  |  |
| 27 | 16: Fail: parent(elizabeth, mickey) | {'Result': 'Search Failed'} |  |  |
| 28 | 17: Fail: half_sibling(mickey, george) | {'Result': 'Search Failed'} |  |  |
| 29 | 18: Fail: query | {'Result': 'Search Failed'} |  |  |
| 30 |  |  |  |
| 31 |  |  |  |
| 32 | Looking for other paths: Redo: parent(Candidate Variable_3, george) |  |  |
| 33 |  |  |  |
| 34 |  |  |  |
| 35 | [Path 4]: |  |  |
| 36 | 19: Found: parent(david, george) |  |  |
| 37 | 20: Searching: Candidate Variable_3=elizabeth |  |  |
| 38 | 21: Fail: elizabeth=elizabeth | {'Result': 'Search Failed'} |  |  |
| 39 | 22: Fail: half_sibling(mickey, george) | {'Result': 'Search Failed'} |  |  |
| 40 | 23: Fail: query | {'Result': 'Search Failed'} |  |  |

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