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 ":".
He
mentions
Sol
,
Sirius
,
Alpha
Centauri
,
61
Cygni
and
Arcturus
.
He:O
mentions:O
Sol:other-astronomything
,:O
Sirius:other-astronomything
,:O
Alpha:other-astronomything
Centauri:other-astronomything
,:O
61:other-astronomything
Cygni:other-astronomything
and:O
Arcturus:other-astronomything
.:O