With no explanation, label each line with "O", "person-athlete", "organization-sportsteam", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
The
Detroit
Lions
signed
Looker
on
August
17
,
2009
after
the
team
waived
wide
receiver
Bobby
Sippio
.
The:O
Detroit:organization-sportsteam
Lions:organization-sportsteam
signed:O
Looker:person-athlete
on:O
August:O
17:O
,:O
2009:O
after:O
the:O
team:O
waived:O
wide:O
receiver:O
Bobby:person-athlete
Sippio:person-athlete
.:O