With no explanation, label each line with "O", "organization-education", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
Consisting
of
approximately
16
boys
and
14
men
,
it
is
one
of
the
main
choral
foundations
of
the
University
of
Oxford
and
is
regarded
as
one
of
the
leading
choirs
of
the
world
.
Consisting:O
of:O
approximately:O
16:O
boys:O
and:O
14:O
men:O
,:O
it:O
is:O
one:O
of:O
the:O
main:O
choral:O
foundations:O
of:O
the:O
University:organization-education
of:organization-education
Oxford:organization-education
and:O
is:O
regarded:O
as:O
one:O
of:O
the:O
leading:O
choirs:O
of:O
the:O
world:O
.:O