Able is related to Capacity. Capacity is a type of Production. Generation is a type of Production. Generation is related to Baby. 
Availability is derived from Ability. Ability is related to Rule. Rule is related to Head. Captain is a type of Head. 
Able <--RelatedTo--> Capacity --IsA--> Production <--IsA-- Generation <--RelatedTo--> Baby 
Availability --DerivedFrom--> Ability <--RelatedTo--> Rule <--RelatedTo--> Head <--IsA-- Captain 