Take is a synonym of Have. Have is related to Toy. Toy is related to Term. Term is related to Fuel. 
you are likely to find Number in/at/on Equation. Number is related to Call. Call is a type of Challenge. Challenge is related to Problem. 
Take <--Synonym--> Have <--RelatedTo--> Toy <--RelatedTo--> Term <--RelatedTo--> Fuel 
Equation <--AtLocation-- Number <--RelatedTo--> Call --IsA--> Challenge <--RelatedTo--> Problem 