With no explanation, label each line with "O", "other-chemicalthing", "other-astronomything", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
R
Coronae
Borealis
is
about
90
%
helium
and
less
than
1
%
hydrogen
.
R:other-astronomything
Coronae:other-astronomything
Borealis:other-astronomything
is:O
about:O
90:O
%:O
helium:other-chemicalthing
and:O
less:O
than:O
1:O
%:O
hydrogen:other-chemicalthing
.:O