Person does not want (to) Struggle. Person wants (to) Sugar. Sugar is a type of Molecule. Chain is part of Molecule. 
Coming is related to Meeting. Meeting is related to Lobby. 
Struggle <--NotDesires-- Person --Desires--> Sugar --IsA--> Molecule <--PartOf-- Chain 
Coming <--RelatedTo--> Meeting <--RelatedTo--> Lobby 