Gas is related to Flame. Flame is related to Smoke. 
Push is a type of Move. Move is a synonym of Act. Act is related to Writing. Writing is related to Thinking. 
Gas <--RelatedTo--> Flame <--RelatedTo--> Smoke 
Push --IsA--> Move <--Synonym--> Act <--RelatedTo--> Writing <--RelatedTo--> Thinking 