Mutual is related to Exchange. Exchange is the opposite of Keep. Keep is related to Habit. 
Please is related to Ask. Beg is a type of Ask. Beg is related to Plea. 
Mutual <--RelatedTo--> Exchange <--Antonym--> Keep <--RelatedTo--> Habit 
Please <--RelatedTo--> Ask <--IsA-- Beg <--RelatedTo--> Plea 