With no explanation, label each line with "O", "event-sportsevent", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
Unraced
as
a
juvenile
he
made
a
considerable
impact
in
the
spring
of
2016
by
winning
the
Dante
Stakes
on
his
third
appearance
.
Unraced:O
as:O
a:O
juvenile:O
he:O
made:O
a:O
considerable:O
impact:O
in:O
the:O
spring:O
of:O
2016:O
by:O
winning:O
the:O
Dante:event-sportsevent
Stakes:event-sportsevent
on:O
his:O
third:O
appearance:O
.:O