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

<np-gapsout_null-gapsin_null-unit>

<discourse_det-indef-sing> <n-not_proper_name-sing-unit> <conj-or> <discourse_det-indef-sing> <n-not_proper_name-unit>

<discourse_det-indef-sing> <n-not_proper_name-sing-unit> <discourse_det-indef-sing> <n-not_proper_name-sing-unit> <conj-or> <discourse_det-indef-sing> <n-not_proper_name-unit>

<discourse_det-num_all> <n-num_all-unit>

<discourse_det-num_null> <n-num_null-unit>

<discourse_det-pl> <n-pl-unit>

<discourse_det-sing> <n-sing-unit>

<n-not_proper_name-unit>

<n-proper_name-sing-unit> <conj-and> <n-proper_name-sing-unit>

<n-proper_name-sing-unit> <n-proper_name-sing-unit> <conj-and> <n-proper_name-sing-unit>

<n-proper_name-sing-unit> <n-proper_name-sing-unit> <conj-or> <n-proper_name-unit>

<n-proper_name-sing-unit> <n-proper_name-sing-unit> <n-proper_name-sing-unit> <conj-and> <n-proper_name-sing-unit>

<n-proper_name-sing-unit> <n-proper_name-sing-unit> <n-proper_name-sing-unit> <n-proper_name-sing-unit> <conj-and> <n-proper_name-sing-unit>

<n-proper_name-unit>

<n-proper_name-unit> <conj-or> <n-proper_name-unit>

<n-proper_name-unit> <poss> <n-unit>

<np-gapsout_null-gapsin_null-unit-not_wh_or_dummy> <postnommod-unit>

<np-gapsout_null-gapsin_null-unit-not_wh_or_gq_or_dummy> <postnommod-unit>

<pre_det> <np-not_mod-gapsout_null-gapsin_null-not_wh_or_gq_or_dummy>

it

that

there

what