With no explanation, label each line with "O", "event-disaster", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
The
town
was
struck
by
the
1980
Irpinia
earthquake
on
23
November
.
The:O
town:O
was:O
struck:O
by:O
the:O
1980:O
Irpinia:event-disaster
earthquake:event-disaster
on:O
23:O
November:O
.:O