With no explanation, label each line with "O", "other-astronomything", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
Both
29P/Schwassmann-Wachmann
and
39P/Oterma
have
been
referred
to
as
centaurs
since
they
have
typical
centaur
orbits
.
Both:O
29P/Schwassmann-Wachmann:other-astronomything
and:O
39P/Oterma:other-astronomything
have:O
been:O
referred:O
to:O
as:O
centaurs:O
since:O
they:O
have:O
typical:O
centaur:other-astronomything
orbits:O
.:O