Crash is a type of Pass. Pass is related to Football. Football is related to Helmet. 
Touch is a type of Suggestion. Touch is related to Personal. Personal is related to Property. Property is related to Item. 
Crash --IsA--> Pass <--RelatedTo--> Football <--RelatedTo--> Helmet 
Suggestion <--IsA-- Touch <--RelatedTo--> Personal <--RelatedTo--> Property <--RelatedTo--> Item 