Concern is related to Thought. Thought is related to Think. 
Second is related to Coat. Coat is related to Suit. Suit is related to Swim. Swim is related to Olympic. 
Concern <--RelatedTo--> Thought <--RelatedTo--> Think 
Second <--RelatedTo--> Coat <--RelatedTo--> Suit <--RelatedTo--> Swim <--RelatedTo--> Olympic 