Explore is a type of Investigate. Investigate is a synonym of Examine. Doctor can Examine. 
Act is a synonym of Move. Move is related to Ride. Ride is a synonym of Mount. 
Explore --IsA--> Investigate <--Synonym--> Examine <--CapableOf-- Doctor 
Act <--Synonym--> Move <--RelatedTo--> Ride <--Synonym--> Mount 