With no explanation, label each line with "O", "person-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
According
to
Warren
,
he
struggled
early
on
learning
to
play
it
due
to
the
tuning
pegs
being
cheap
,
causing
the
instrument
to
constantly
fall
out
of
tune
.
According:O
to:O
Warren:person-other
,:O
he:O
struggled:O
early:O
on:O
learning:O
to:O
play:O
it:O
due:O
to:O
the:O
tuning:O
pegs:O
being:O
cheap:O
,:O
causing:O
the:O
instrument:O
to:O
constantly:O
fall:O
out:O
of:O
tune:O
.:O