one thing you do when you Hike is Sweat. Sweat is related to Function. Function is related to Divide. 
Extend is the opposite of Shrink. Shrink is a synonym of Retreat. Retreat is the opposite of Advance. Advance is related to Early. 
Hike --HasSubevent--> Sweat <--RelatedTo--> Function <--RelatedTo--> Divide 
Extend <--Antonym--> Shrink <--Synonym--> Retreat <--Antonym--> Advance <--RelatedTo--> Early 