The rules that use the category "<marker_type>" are:

<nlb-not_command_or_system_utterance_or_user_response>

<marker_type>

<marker_type> on the deck

<nlb-nlb7>

<marker_type>

<marker_type> on the deck

<nlb-not_careful-nlb7>

<marker_type>

<marker_type> on the deck

<perception_type>

<perception_type-recursive> from <marker_type> <location_vector>