Use is related to Hang. Hang is related to Murder. Rifle can be used for Murder. Rifle is related to Similar. 
Room is related to Board. Board is related to Ceo. 
Use <--RelatedTo--> Hang <--RelatedTo--> Murder <--UsedFor-- Rifle <--RelatedTo--> Similar 
Room <--RelatedTo--> Board <--RelatedTo--> Ceo 