Open is related to Door. Forest is etymologically related to Door. Forest is related to Rabbit. Rabbit is related to Pull. 
Distinct is related to Bell. Bell is related to Musical. Musical is derived from Music. 
Open <--RelatedTo--> Door <--EtymologicallyRelatedTo-- Forest <--RelatedTo--> Rabbit <--RelatedTo--> Pull 
Distinct <--RelatedTo--> Bell <--RelatedTo--> Musical --DerivedFrom--> Music 