With no explanation, label each line with "product-airplane", "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
The
facility
served
as
the
base
for
several
General
Atomics
MQ-9
Reaper
unmanned
aerial
vehicles
.
The:O
facility:O
served:O
as:O
the:O
base:O
for:O
several:O
General:product-airplane
Atomics:product-airplane
MQ-9:product-airplane
Reaper:product-airplane
unmanned:O
aerial:O
vehicles:O
.:O