With no explanation, label each line with "O", "person-athlete", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
They
were
running
along
,
but
it
concerned
me
the
way
the
track
was
changing
throughout
the
day
''
,
said
Pletcher
.
They:O
were:O
running:O
along:O
,:O
but:O
it:O
concerned:O
me:O
the:O
way:O
the:O
track:O
was:O
changing:O
throughout:O
the:O
day:O
'':O
,:O
said:O
Pletcher:person-athlete
.:O