With no explanation, label each line with "O", "organization-sportsleague", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
They
were
both
drafted
in
the
NFL
1999
.
They:O
were:O
both:O
drafted:O
in:O
the:O
NFL:organization-sportsleague
1999:O
.:O