With no explanation, label each line with "person-athlete", "organization-sportsleague", "organization-education", "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting" or "art-writtenart" preceded by ":".
Burroughs
was
scheduled
to
compete
at
the
20
'
US
Olympic
Team
Trials
on
April
4
at
State
College
,
Pennsylvania
.
Burroughs:person-athlete
was:O
scheduled:O
to:O
compete:O
at:O
the:O
20:organization-sportsleague
':organization-sportsleague
US:organization-sportsleague
Olympic:organization-sportsleague
Team:organization-sportsleague
Trials:organization-sportsleague
on:O
April:O
4:O
at:O
State:organization-education
College:organization-education
,:organization-education
Pennsylvania:organization-education
.:O