With no explanation, label each line with "O", "organization-sportsteam", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
It
was
his
fourth
30-home
run
season
since
joining
the
Orioles
(
2012
,
2013
,
and
2015
)
.
It:O
was:O
his:O
fourth:O
30-home:O
run:O
season:O
since:O
joining:O
the:O
Orioles:organization-sportsteam
(:O
2012:O
,:O
2013:O
,:O
and:O
2015:O
):O
.:O