Overcome is related to Climb. Climb is related to Movement. Foot can be used for Movement. Foot is a type of Support. 
Senate is a different concept from Representative. Representative is related to Agency. Agency is etymologically related to Agent. Agent is related to Gun. 
Overcome <--RelatedTo--> Climb <--RelatedTo--> Movement <--UsedFor-- Foot --IsA--> Support 
Senate <--DistinctFrom--> Representative <--RelatedTo--> Agency --EtymologicallyRelatedTo--> Agent <--RelatedTo--> Gun 