With no explanation, label each line with "building-library", "O", "person-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
He
was
chief
librarian
of
the
Toronto
Public
Library
from
1937
to
1956
,
following
George
Locke
.
He:O
was:O
chief:O
librarian:O
of:O
the:O
Toronto:building-library
Public:building-library
Library:building-library
from:O
1937:O
to:O
1956:O
,:O
following:O
George:person-other
Locke:person-other
.:O