Ambassador is related to Communication. Communication is a synonym of Discourse. Discourse is related to Debate. Debate is related to Political. 
Possession is related to Keep. Keep is related to Building. Building is related to Brick. 
Ambassador <--RelatedTo--> Communication <--Synonym--> Discourse <--RelatedTo--> Debate <--RelatedTo--> Political 
Possession <--RelatedTo--> Keep <--RelatedTo--> Building <--RelatedTo--> Brick 