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 ":".
His
sister
,
Rachel
,
competes
in
track
and
field
.
His:O
sister:O
,:O
Rachel:person-other
,:O
competes:O
in:O
track:O
and:O
field:O
.:O