With no explanation, label each line with "location-GPE", "O", "event-sportsevent", "person-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting" or "art-writtenart" preceded by ":".
Crow
entered
the
U.S
.
national
team
program
at
the
1984
Summer
Olympics
.
Crow:person-other
entered:O
the:O
U.S:location-GPE
.:location-GPE
national:O
team:O
program:O
at:O
the:O
1984:event-sportsevent
Summer:event-sportsevent
Olympics:event-sportsevent
.:O