Required is related to Price. Price is related to Determine. Determine is a synonym of Set. 
Swim is related to Free. Free is similar to Clear. Clear is related to Tape. 
Required <--RelatedTo--> Price <--RelatedTo--> Determine <--Synonym--> Set 
Swim <--RelatedTo--> Free <--SimilarTo--> Clear <--RelatedTo--> Tape 