With no explanation, label each line with "location-GPE", "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
In
the
United
States
,
most
practicing
structural
engineers
are
currently
licensed
as
civil
engineers
,
but
the
situation
varies
from
state
to
state
.
In:O
the:O
United:location-GPE
States:location-GPE
,:O
most:O
practicing:O
structural:O
engineers:O
are:O
currently:O
licensed:O
as:O
civil:O
engineers:O
,:O
but:O
the:O
situation:O
varies:O
from:O
state:O
to:O
state:O
.:O