Leg is related to Park. Park is related to Ground. Ground is related to Tunnel. 
Pleased is a synonym of Content. Content is related to Feeling. Feeling is related to Hate. 
Leg <--RelatedTo--> Park <--RelatedTo--> Ground <--RelatedTo--> Tunnel 
Pleased <--Synonym--> Content <--RelatedTo--> Feeling <--RelatedTo--> Hate 