Pick is related to Hold. Hold is a synonym of Apply. Apply is related to Effort. you are likely to find Try in/at/on Effort. 
Competitor is a synonym of Opponent. Opponent is related to Team. Section is a type of Team. Book is a type of Section. 
Pick <--RelatedTo--> Hold <--Synonym--> Apply <--RelatedTo--> Effort <--AtLocation-- Try 
Competitor <--Synonym--> Opponent <--RelatedTo--> Team <--IsA-- Section <--IsA-- Book 