(=>
(instance ?Spread ButterflySpread)
(exists (?Call1 ?Call2 ?Call3 ?Call4 ?Price1 ?Price2 ?Price3 ?Price4 ?U)
(and
(instance ?Call1 CallOption)
(instance ?Call2 CallOption)
(instance ?Call3 CallOption)
(instance ?Call4 CallOption)
(subProcess ?Call1 ?Spread)
(subProcess ?Call2 ?Spread)
(subProcess ?Call3 ?Spread)
(subProcess ?Call4 ?Spread)
(instance ?U UnitOfCurrency)
(strikePrice ?Call1
(MeasureFn ?Price1 ?U))
(strikePrice ?Call2
(MeasureFn ?Price2 ?U))
(strikePrice ?Call3
(MeasureFn ?Price3 ?U))
(strikePrice ?Call4
(MeasureFn ?Price4 ?U))
(lessThan ?Price1 ?Price2)
(lessThan ?Price1 ?Price3)
(greaterThan ?Price4 ?Price2)
(greaterThan ?Price4 ?Price2)))) 
FinancialOntology.kif 31193143 
 If a process is an instance of butterfly spread,
 then there exist a financial instrument, another financial instrument,, , a third financial instrument,, , a fourth financial instrument,, , a real number,, , another real number,, , a third real number,, , a fourth real number and an unit of measure such that the financial instrument is an instance of call option and the other financial instrument is an instance of call option and the third financial instrument is an instance of call option and the fourth financial instrument is an instance of call option and the financial instrument is a subprocess of the process and the other financial instrument is a subprocess of the process and the third financial instrument is a subprocess of the process and the fourth financial instrument is a subprocess of the process and the unit of measure is an instance of unit of currency and the real number the unit of measure(s) is a strike price of the financial instrument and the other real number the unit of measure(s) is a strike price of the other financial instrument and the third real number the unit of measure(s) is a strike price of the third financial instrument and the fourth real number the unit of measure(s) is a strike price of the fourth financial instrument and the real number is less than the other real number and the real number is less than the third real number and the fourth real number is greater than the other real number and the fourth real number is greater than the other real number
