With no explanation, label each line with "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport", "building-hospital" or "building-hotel" preceded by ":".
He
is
the
eponym
of
the
Bell
polynomials
and
the
Bell
numbers
of
combinatorics
.
He:O
is:O
the:O
eponym:O
of:O
the:O
Bell:O
polynomials:O
and:O
the:O
Bell:O
numbers:O
of:O
combinatorics:O
.:O