Able is related to Possible. Possible is related to Realistic. Realistic is similar to Living. Living is related to Body. 
Diagnosis is related to Condition. Condition is related to Being. 
Able <--RelatedTo--> Possible <--RelatedTo--> Realistic <--SimilarTo--> Living <--RelatedTo--> Body 
Diagnosis <--RelatedTo--> Condition <--RelatedTo--> Being 