With no explanation, label each line with "person-athlete", "location-bodiesofwater", "event-sportsevent", "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting" or "art-writtenart" preceded by ":".
Muhammad
Ali
threw
his
gold
medal
from
the
1960
Rome
Olympics
into
the
Ohio
River
while
standing
on
the
bridge
.
Muhammad:person-athlete
Ali:person-athlete
threw:O
his:O
gold:O
medal:O
from:O
the:O
1960:event-sportsevent
Rome:event-sportsevent
Olympics:event-sportsevent
into:O
the:O
Ohio:location-bodiesofwater
River:location-bodiesofwater
while:O
standing:O
on:O
the:O
bridge:O
.:O