Paper is related to Report. Report is related to Weather. Weather is related to Winter. Winter is related to Season. 
Comparable is related to Equal. Equal is related to Artificial. Artificial is related to Smoke. Smoke is related to Flame. 
Paper <--RelatedTo--> Report <--RelatedTo--> Weather <--RelatedTo--> Winter <--RelatedTo--> Season 
Comparable <--RelatedTo--> Equal <--RelatedTo--> Artificial <--RelatedTo--> Smoke <--RelatedTo--> Flame 