With no explanation, label each line with "product-other", "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
Some
other
video
players
can
also
recognize
and
play
M4V
files
if
the
file
extension
is
changed
from
``
.m4v
''
to
``
.mp4
''
.
Some:O
other:O
video:O
players:O
can:O
also:O
recognize:O
and:O
play:O
M4V:product-other
files:O
if:O
the:O
file:O
extension:O
is:O
changed:O
from:O
``:O
.m4v:O
'':O
to:O
``:O
.mp4:O
'':O
.:O