The rules that use the category "<discourse_det-sing>" are:

<np-gapsout_null-gapsin_null-unit>

<discourse_det-sing> <n-sing-unit>

<np-gapsout_null-gapsin_null-breach-sing>

<discourse_det-sing> <n-sing-breach>

<np-gapsout_null-gapsin_null-resupply-sing>

<discourse_det-sing> <n-sing-resupply>

<np-gapsout_null-gapsin_null-attack-sing>

<discourse_det-sing> <n-sing-attack>

<np-gapsout_null-gapsin_null-unit-sing>

<discourse_det-sing> <n-sing-unit>

<np-gapsout_null-gapsin_null-attack>

<discourse_det-sing> <n-sing-attack>

<np-gapsout_null-gapsin_null-kind-sing>

<discourse_det-sing> <n-sing-kind>

<np-gapsout_null-gapsin_null-point_loc-sing>

<discourse_det-sing> <n-sing-point_loc>

<np-gapsout_null-gapsin_null-scale_number-sing>

<discourse_det-sing> <n-sing-scale_number>

<np-gapsout_null-gapsin_null-compass_direction-sing>

<discourse_det-sing> <n-sing-compass_direction>

<np-gapsout_null-gapsin_null-line_loc-sing>

<discourse_det-sing> <n-sing-line_loc>

<np-gapsout_null-gapsin_null-orientation-sing>

<discourse_det-sing> <n-sing-orientation>

<np-gapsout_null-gapsin_null-enemy-sing>

<discourse_det-sing> <n-sing-enemy>

<np-gapsout_null-gapsin_null-np_type_null-sing>

<discourse_det-sing> <n-sing-np_type_null>