Retreat is a type of Withdrawal. Retreat is related to Military. 
Involve is related to Include. Include is related to Part. Part is related to Motor. Motor is related to Powerful. 
Withdrawal <--IsA-- Retreat <--RelatedTo--> Military 
Involve <--RelatedTo--> Include <--RelatedTo--> Part <--RelatedTo--> Motor <--RelatedTo--> Powerful 