With no explanation, label each line with "product-other", "O", "other-astronomything", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
On
14
December
2013
at
13:12
UTC
Chang
'
e
3
soft-landed
a
rover
on
the
Moon
.
On:O
14:O
December:O
2013:O
at:O
13:12:O
UTC:O
Chang:product-other
':product-other
e:product-other
3:product-other
soft-landed:O
a:O
rover:O
on:O
the:O
Moon:other-astronomything
.:O