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 ":".
His
first
discovery
was
the
asteroid
267
Tirza
in
1887
.
His:O
first:O
discovery:O
was:O
the:O
asteroid:O
267:other-astronomything
Tirza:other-astronomything
in:O
1887:O
.:O