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

<unit_n>

<atf_noun> <base_of_fire_phrase>

<unit_n-sing>

<atf_noun> <base_of_fire_phrase>

<unit_n-not_det-sing>

<atf_noun> <base_of_fire_phrase>

<bare_atf_id>

<ordinal> <atf_noun>

<atf_type-not_creatable>

<atf_noun>