The category "<locate_operation-gapsout_null-gapsin_null>" can be expressed as follows:

<locate_operation-gapsout_null-gapsin_null>

<locate_area>

<locate_line-gapsout_null-gapsin_null>

<locate_point-gapsout_null-gapsin_null>

<locate_unit-gapsout_null-gapsin_null>