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 ":".
Sasha
was
introduced
as
established
character
Sid
Walker
's
(
Robert
Mammone
)
illegitimate
daughter
.
Sasha:person-other
was:O
introduced:O
as:O
established:O
character:O
Sid:person-other
Walker:person-other
's:O
(:O
Robert:person-other
Mammone:person-other
):O
illegitimate:O
daughter:O
.:O