you are likely to find Mouse in/at/on Trap. Trap is a type of Drain. Drain is related to Empty. Empty is a synonym of Clean. 
the last thing you do when you Sing is Stop. Freedom would make you want to Sing. 
Mouse --AtLocation--> Trap --IsA--> Drain <--RelatedTo--> Empty <--Synonym--> Clean 
Stop <--HasLastSubevent-- Sing <--CausesDesire-- Freedom 