The rules that use the category "<contact_type_nom-point_id_type_none>" are:

<contact_command-recursive>

<contact_type_nom-point_id_type_none> <air_location> <contact_type-point_id_type_none>

<contact_command-point_id_type_none-recursive>

<contact_type_nom-point_id_type_none> <air_location> <contact_type-point_id_type_none>

<contact_type-sing-neutral>

<contact_type_nom-point_id_type_none> <aircraft_activity> <contact_type-point_id_type_none-sing-simple-neutral>

<contact_type-point_id_type_none-simple>

<det> <contact_type_nom-point_id_type_none>

<contact_command-point_id_type_none>

<contact_type_nom-point_id_type_none> <air_location> <contact_type-point_id_type_none>

<contact_type-pl-neutral>

<contact_type_nom-point_id_type_none> <aircraft_activity> <contact_type-point_id_type_none-pl-simple-neutral>

<contact_type>

<contact_type_nom-point_id_type_none> <aircraft_activity> <contact_type-point_id_type_none-simple>

<det> <contact_type_nom-point_id_type_none>

<contact_type-point_id_type_none>

<contact_type_nom-point_id_type_none> <aircraft_activity> <contact_type-point_id_type_none-simple>

<det> <contact_type_nom-point_id_type_none>

<contact_type-point_id_type_none-pl-neutral>

<contact_type_nom-point_id_type_none> <aircraft_activity> <contact_type-point_id_type_none-pl-simple-neutral>

<contact_type-point_id_type_none-sing-neutral>

<contact_type_nom-point_id_type_none> <aircraft_activity> <contact_type-point_id_type_none-sing-simple-neutral>

<contact_command>

<contact_type_nom-point_id_type_none> <air_location> <contact_type-point_id_type_none>