The category "<engagement_loc-gapsout_np_gap-gapsin_np_gap>" can be expressed as follows:

<engagement_loc-gapsout_np_gap-gapsin_np_gap>

<area>

<line_loc-gapsout_np_gap-gapsin_np_gap>

<point_loc-gapsout_np_gap-gapsin_np_gap>