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Term 1: Term 2:

(=>
    (and
        (or
            (publishedPrice ?ENT ?PRICE ?AGENT ?PS)
            (unitPrice ?ENT ?QUANT ?AGENT ?PS))
        (subclass ?ENT Physical)
        (immediateInstance ?ITEM ?ENT)
        (validFor ?PS ?CUSTCLASS)
        (instance ?CUSTOMER ?CUSTCLASS))
    (modalAttribute
        (=>
            (and
                (instance ?B Buying)
                (agent ?B ?CUSTOMER)
                (origin ?B ?AGENT)
                (patient ?B ?ITEM))
            (transactionAmount ?B ?PRICE)) Likely))
Catalog.kif 354-370


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