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 ":".
During
this
time
,
he
trained
with
Gary
Freeman
and
Daryl
Halligan
and
this
allowed
him
to
improve
his
halfback
and
goal
kicking
skills
.
During:O
this:O
time:O
,:O
he:O
trained:O
with:O
Gary:person-athlete
Freeman:person-athlete
and:O
Daryl:person-athlete
Halligan:person-athlete
and:O
this:O
allowed:O
him:O
to:O
improve:O
his:O
halfback:O
and:O
goal:O
kicking:O
skills:O
.:O