you are likely to find Period in/at/on History. Period is related to Monthly. 
you are likely to find Cat in/at/on Basement. Persian is a type of Cat. Persian is a type of Language. Language is related to French. 
History <--AtLocation-- Period <--RelatedTo--> Monthly 
Basement <--AtLocation-- Cat <--IsA-- Persian --IsA--> Language <--RelatedTo--> French 