With no explanation, label each line with "O", "product-weapon", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
The
cupola
mount
on
the
M48A2
and
M48A3
was
thoroughly
disliked
by
most
tankers
,
as
it
proved
unreliable
in
service
.
The:O
cupola:O
mount:O
on:O
the:O
M48A2:product-weapon
and:O
M48A3:product-weapon
was:O
thoroughly:O
disliked:O
by:O
most:O
tankers:O
,:O
as:O
it:O
proved:O
unreliable:O
in:O
service:O
.:O