With no explanation, label each line with "O", "person-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
He
attacked
Anna
Rogulskyj
,
who
was
walking
alone
,
striking
her
unconscious
with
a
ball-pein
hammer
and
slashing
her
stomach
with
a
knife
.
He:O
attacked:O
Anna:person-other
Rogulskyj:person-other
,:O
who:O
was:O
walking:O
alone:O
,:O
striking:O
her:O
unconscious:O
with:O
a:O
ball-pein:O
hammer:O
and:O
slashing:O
her:O
stomach:O
with:O
a:O
knife:O
.:O