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

<attach_detach_part_command>

<attach_detach_part_verb> <det-sing> <attached_part>

<breach_noun_phrase>

<det-sing> <breach_type> breach

<item>

<det-sing> <item_n-sing>

<det-sing> <item_n-sing> <location_mod>

<item-not_call_sign>

<det-sing> <item_n-sing>

<det-sing> <item_n-sing> <location_mod>

<target_description>

<det-sing> <target_nom-sing>

<attach_detach_part_command-not_located>

<attach_detach_part_verb> <det-sing> <attached_part>

<base_of_fire_phrase>

<det-sing> <base_of_fire_nom>

<resupply_command-not_located>

<set_up_verb> <det-sing> service station

<resupply_command>

<set_up_verb> <det-sing> service station