With no explanation, label each line with "O", "person-politician", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
After
hearing
of
this
action
Safdarjung
fell
ill
and
died
.
After:O
hearing:O
of:O
this:O
action:O
Safdarjung:person-politician
fell:O
ill:O
and:O
died:O
.:O