Pitch is related to Offer. Offer is related to Bid. Bid is a type of Seek. Seek is a type of Request. 
Hire is a type of Employee. Ship is a type of Hire. Ship is related to Crew. Crew is a synonym of Lot. 
Pitch <--RelatedTo--> Offer <--RelatedTo--> Bid --IsA--> Seek --IsA--> Request 
Employee <--IsA-- Hire <--IsA-- Ship <--RelatedTo--> Crew <--Synonym--> Lot 