The rules that use the category "<np-gapsout_null-gapsin_null-system-not_wh_or_dummy>" are:

<action_description-system_utterance-fin-inv>

<aux-vform_fin-vform_subcat_base> <np-gapsout_null-gapsin_null-system-not_wh_or_dummy> <vp-system_utterance-base-gapsout_null-gapsin_null-system>

<action_description-base-not_inv>

<np-gapsout_null-gapsin_null-system-not_wh_or_dummy> <vp-system_utterance-base-gapsout_null-gapsin_null-system>

<action_description-fin-not_inv>

<np-gapsout_null-gapsin_null-system-not_wh_or_dummy> <vp-system_utterance-fin-gapsout_null-gapsin_null-system>

<action_description-user_response-fin-inv>

<aux-vform_fin-vform_subcat_base> <np-gapsout_null-gapsin_null-system-not_wh_or_dummy> <vp-user_response-base-gapsout_null-gapsin_null-system>

<action_description-inf-not_inv>

<np-gapsout_null-gapsin_null-system-not_wh_or_dummy> <vp-system_utterance-inf-gapsout_null-gapsin_null-system>

<action_description-system_utterance-fin-not_inv>

<np-gapsout_null-gapsin_null-system-not_wh_or_dummy> <vp-system_utterance-fin-gapsout_null-gapsin_null-system>