f | 1 | [Path 1]: | f | 1 | [Path 1]:
t | 2 | 0: Start of execution: Beginning Search | t | 2 | 0: Start of execution: Beginning Search
| 3 | 1: Searching: query |  | 3 | 1: Searching: query
| 4 | 2: Searching: relationship(april, melba) |  | 4 | 2: Searching: relationship(april, melba)
| 5 | 3: Fail: parent(april, melba) |  | 5 | 3: Searching: parent(april, melba)
| 6 | 4: Backtrack to: relationship(april, melba) |  | 6 | 4: Fail: parent(april, melba) | {'Result': 'Search Failed'}
|  |  |  | 7 |
|  |  |  | 8 | Looking for other paths: Redo: relationship(april, melba)
|  |  |  | 9 |
|  |  |  | 10 |
|  |  |  | 11 | [Path 2]:
|  |  |  | 12 | 5: Searching: parent(melba, april)
|  |  |  | 13 | 6: Fail: parent(melba, april) | {'Result': 'Search Failed'}
|  |  |  | 14 |
|  |  |  | 15 | Looking for other paths: Redo: relationship(april, melba)
|  |  |  | 16 |
|  |  |  | 17 |
|  |  |  | 18 | [Path 3]:
| 7 | 5: Fail: sibling(april, melba) |  | 19 | 7: Searching: sibling(april, melba)
| 8 | 6: Backtrack to: relationship(april, melba) |  | 20 | 8: Searching: parent(Candidate Variable_0, april)
|  |  |  | 21 | 9: Fail: parent(Candidate Variable_0, april) | {'Result': 'Search Failed'}
|  |  |  | 22 | 10: Fail: sibling(april, melba) | {'Result': 'Search Failed'}
|  |  |  | 23 |
|  |  |  | 24 | Looking for other paths: Redo: relationship(april, melba)
|  |  |  | 25 |
|  |  |  | 26 |
|  |  |  | 27 | [Path 4]:
| 9 | 7: Fail: sibling(melba, april) |  | 28 | 11: Searching: sibling(melba, april)
| 10 | 8: Backtrack to: query |  | 29 | 12: Searching: parent(Candidate Variable_1, melba)
| 11 | 9: Fail: relationship(april, melba), write(true) |  | 30 | 13: Found: parent(benjamin, melba)
| 12 | 10: Backtrack to: query |  | 31 | 14: Searching: parent(benjamin, april)
| 13 | 11: Found: query | {'Result': 'false'} |  | 32 | 15: Fail: parent(benjamin, april) | {'Result': 'Search Failed'}
|  |  |  | 33 | 16: Fail: sibling(melba, april) | {'Result': 'Search Failed'}
|  |  |  | 34 | 17: Fail: relationship(april, melba) | {'Result': 'Search Failed'}
|  |  |  | 35 | 18: Fail: query | {'Result': 'Search Failed'}
|  |  |  | 36 |

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