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13 lines
703 B
13 lines
703 B
2 years ago
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Exercise 4.69: Beginning with the data base and
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the rules you formulated in Exercise 4.63, devise a rule for adding
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“greats” to a grandson relationship. This should enable the system to deduce
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that Irad is the great-grandson of Adam, or that Jabal and Jubal are the
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great-great-great-great-great-grandsons of Adam. (Hint: Represent the fact
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about Irad, for example, as ((great grandson) Adam Irad). Write rules
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that determine if a list ends in the word grandson. Use this to express
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a rule that allows one to derive the relationship ((great . ?rel) ?x
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?y), where ?rel is a list ending in grandson.) Check your rules
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on queries such as ((great grandson) ?g ?ggs) and (?relationship
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Adam Irad).
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