Crowd is the opposite of Single. Single is a synonym of Odd. Odd is related to Fellow. Fellow is a synonym of Boyfriend. 
Hear is related to Activity. Support is a type of Activity. 
Crowd <--Antonym--> Single <--Synonym--> Odd <--RelatedTo--> Fellow <--Synonym--> Boyfriend 
Hear <--RelatedTo--> Activity <--IsA-- Support 