The rules that use the category "<cardinal_direction>" are:
<cardinal_direction> <reference_point> <range>
<cardinal_direction> <width>
<cardinal_direction> <width> from <contact_type-simple>
<width> <cardinal_direction>
<width> <cardinal_direction> <of_from> <contact_type-simple>
<cardinal_direction>
<to_prep> the <cardinal_direction>