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 ":".
He
was
signed
by
the
Brooklyn
Dodgers
as
a
high
school
pitcher
in
1952
.
He:O
was:O
signed:O
by:O
the:O
Brooklyn:organization-sportsteam
Dodgers:organization-sportsteam
as:O
a:O
high:O
school:O
pitcher:O
in:O
1952:O
.:O