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 ":".
After
a
Dustin
Keller
touchdown
catch
Devin
McCourty
fumbled
the
kickoff
.
After:O
a:O
Dustin:person-athlete
Keller:person-athlete
touchdown:O
catch:O
Devin:person-athlete
McCourty:person-athlete
fumbled:O
the:O
kickoff:O
.:O