The rules that use the category "<np-gapsout_null-gapsin_np_gap-unit-not_wh_or_gq_or_dummy-pl>" are:
<np-gapsout_null-gapsin_np_gap-unit-not_wh_or_gq_or_dummy-pl> <postnommod-unit>
<cop-pl> <np-gapsout_null-gapsin_np_gap-unit-not_wh_or_gq_or_dummy-pl> <postnommod-unit>
<cop-pl> <np-gapsout_null-gapsin_null-unit-not_wh-pl> <np-gapsout_null-gapsin_np_gap-unit-not_wh_or_gq_or_dummy-pl>