Equation is related to Result. Result is related to Daughter. 
Bring is related to Mention. Mention is related to Speak. Spokesman is etymologically related to Speak. 
Equation <--RelatedTo--> Result <--RelatedTo--> Daughter 
Bring <--RelatedTo--> Mention <--RelatedTo--> Speak <--EtymologicallyRelatedTo-- Spokesman 