22 lines
301 B
Plaintext
22 lines
301 B
Plaintext
parent(john, douglas).
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parent(john, douglas).
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parent(bob, john).
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parent(ebbon, bob).
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parent(john, douglas).
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ancestor(john, douglas).
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ancestor(bob, john).
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ancestor(ebbon, bob).
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ancestor(bob, douglas).
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ancestor(ebbon, john).
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ancestor(ebbon, douglas).
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ancestor(bob, john).
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ancestor(ebbon, john).
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