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 ":".
The
truss
rod
(
1.2
)
is
a
metal
rod
(
usually
adjustable
)
that
counters
the
tension
of
the
strings
to
keep
the
neck
straight
.
The:O
truss:O
rod:O
(:O
1.2:O
):O
is:O
a:O
metal:O
rod:O
(:O
usually:O
adjustable:O
):O
that:O
counters:O
the:O
tension:O
of:O
the:O
strings:O
to:O
keep:O
the:O
neck:O
straight:O
.:O