With no explanation, label each line with "O", "organization-education", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
The
eatery
served
as
the
gang
's
hangout
when
not
in
the
lunchroom
at
Caltech
.
The:O
eatery:O
served:O
as:O
the:O
gang:O
's:O
hangout:O
when:O
not:O
in:O
the:O
lunchroom:O
at:O
Caltech:organization-education
.:O