Two analogies that relate actions with their consequences are given in the form "A : B. C : ?". The phrase "A : B" relates action A to consequence B. Your task is to replace the question mark (?) with the appropriate consquence of the given action C, following the "A : B" relation. Your answer should be a single verb, without further explanation.

[Q]: ignite : burn. fear : ?
[A]: flee


[Q]: fear : flee. crush : ?
[A]: break


[Q]: aspire : attain. listen : ?
[A]:
hear