Cell is a type of Film. Cell is related to Operation. Operation is related to Child. 
Unite is a type of Change. Unite is the opposite of Divide. Divide is related to Calculation. Calculation is related to Average. 
Film <--IsA-- Cell <--RelatedTo--> Operation <--RelatedTo--> Child 
Change <--IsA-- Unite <--Antonym--> Divide <--RelatedTo--> Calculation <--RelatedTo--> Average 