Latin is related to Science. Science is related to Classroom. Classroom have Floor. Floor is related to Main. 
Good is related to Description. Description is related to Weird. Weird is a different concept from Usual. 
Latin <--RelatedTo--> Science <--RelatedTo--> Classroom --HasA--> Floor <--RelatedTo--> Main 
Good <--RelatedTo--> Description <--RelatedTo--> Weird <--DistinctFrom--> Usual 