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appearance as argument number 1

(documentation Necessity ChineseLanguage "这是指应用于必须出现 Proposition 的属性，即是它在所有的世界上都会实现。")	Merge.kif 17754-17755
(documentation Necessity EnglishLanguage "Attribute that applies to Propositions that are necessary, i.e. true in every possible world.")	Merge.kif 17752-17753
(instance Necessity AlethicAttribute)	Merge.kif 17751-17751

appearance as argument number 2

(termFormat EnglishLanguage Necessity "necessity")

domainEnglishFormat.kif 7096-7096

antecedent

(<=> (modalAttribute ?FORMULA Necessity) (not (modalAttribute (not ?FORMULA) Possibility)))	Merge.kif 17757-17759
(=> (and (instance ?AGENT Agent) (potentialCustomer ?CUST ?AGENT) (modalAttribute (and (instance ?R Reserving) (destination ?R ?AGENT)) Necessity) (conditionalProbability (exists (?RES1) (and (instance ?RES1 Reservation) (reservingEntity ?CUST ?RES1) (fulfillingEntity ?AGENT ?RES1))) (customer ?CUST ?AGENT) ?NUM1) (conditionalProbability (not (exists (?RES2) (and (instance ?RES2 Reservation) (reservingEntity ?CUST ?RES2) (fulfillingEntity ?AGENT ?RES2)))) (customer ?CUST ?AGENT) ?NUM2)) (lessThan ?NUM2 ?NUM1))	Dining.kif 729-752
(=> (modalAttribute ?FORMULA Necessity) (modalAttribute ?FORMULA Possibility))	Merge.kif 17761-17763

consequent

(=>
    (and
        (instance ?H Human)
        (instance ?A AwardingADegree)
        (patient ?A
            (HonoraryDegreeFn ?FIELDOFSTUDY ?SCHOOL))
        (destination ?A ?H)
        (agent ?A ?SCHOOL)
        (exists (?INTERVAL)
            (instance ?INTERVAL TimeInterval)))
    (and
        (not
            (modalAttribute
                (holdsDuring ?INTERVAL
                    (attends ?S ?SCHOOL)) Necessity))
        (modalAttribute
            (attribute ?H Student) Unlikely)))

LinkedInDegrees.kif 115-129