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 ":".
The
metallicity
of
Kapteyn
's
star
is
estimated
to
be
about
8
times
less
than
the
Sun
.
The:O
metallicity:O
of:O
Kapteyn:other-astronomything
's:other-astronomything
star:other-astronomything
is:O
estimated:O
to:O
be:O
about:O
8:O
times:O
less:O
than:O
the:O
Sun:other-astronomything
.:O