Heal is related to Foot. Foot is related to Scale. Scale is related to Ladder. 
Look is a synonym of Investigate. Explore is a type of Investigate. Explore is a synonym of Examine. Exam is a form of Examine. 
Heal <--RelatedTo--> Foot <--RelatedTo--> Scale <--RelatedTo--> Ladder 
Look <--Synonym--> Investigate <--IsA-- Explore <--Synonym--> Examine <--FormOf-- Exam 