Manipulate is a type of Interact. Combine is a type of Interact. Combine is a synonym of Unite. Unite is the opposite of Divide. 
Stage is related to Object. Object is related to Sign. Sign is related to Yield. 
Manipulate --IsA--> Interact <--IsA-- Combine <--Synonym--> Unite <--Antonym--> Divide 
Stage <--RelatedTo--> Object <--RelatedTo--> Sign <--RelatedTo--> Yield 