With no explanation, label each line with "building-other", "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
Construction
of
the
25
de
Abril
Bridge
began
on
5
November
1962
.
Construction:O
of:O
the:O
25:building-other
de:building-other
Abril:building-other
Bridge:building-other
began:O
on:O
5:O
November:O
1962:O
.:O