The rules that use the category "<cancel_verb>" are:

<cancel_operation-user_response-gapsout_null-gapsin_null>

<cancel_verb> that

<cancel_operation-command-gapsout_null-gapsin_null>

<cancel_verb> that

<cancel_operation-system_utterance-gapsout_null-gapsin_null>

<cancel_verb> that