Admission is related to Entry. Entry is a synonym of Enter. Enter is related to Key. 
Change is related to Time. Time is related to Sale. Solar is etymologically related to Sale. 
Admission <--RelatedTo--> Entry <--Synonym--> Enter <--RelatedTo--> Key 
Change <--RelatedTo--> Time <--RelatedTo--> Sale <--EtymologicallyRelatedTo-- Solar 