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 ":".
The
planet
takes
almost
exactly
two
years
to
orbit
the
star
at
the
average
distance
of
1.6
AU
.
The:O
planet:O
takes:O
almost:O
exactly:O
two:O
years:O
to:O
orbit:O
the:O
star:O
at:O
the:O
average:O
distance:O
of:O
1.6:O
AU:O
.:O