With no explanation, label each line with "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport", "building-hospital" or "building-hotel" preceded by ":".
Survival
AR-7
has
a
3/8
''
scope
sight
rail
integral
with
the
receiver
to
accept
standard
Weaver-style
``
Tip-Off
''
rings
.
Survival:O
AR-7:O
has:O
a:O
3/8:O
'':O
scope:O
sight:O
rail:O
integral:O
with:O
the:O
receiver:O
to:O
accept:O
standard:O
Weaver-style:O
``:O
Tip-Off:O
'':O
rings:O
.:O