Pilot is related to Drive. Drive is related to Energy. Sun can be used for Energy. 
Abandon is the opposite of Maintain. Maintain is a synonym of Defend. Check is a type of Defend. 
Pilot <--RelatedTo--> Drive <--RelatedTo--> Energy <--UsedFor-- Sun 
Abandon <--Antonym--> Maintain <--Synonym--> Defend <--IsA-- Check 