With no explanation, label each line with "location-GPE", "O", "organization-politicalparty", "person-politician", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting" or "art-writtenart" preceded by ":".
Das
served
as
a
functionary
in
Congress
Socialist
Party
in
his
native
place
Sonpur
.
Das:person-politician
served:O
as:O
a:O
functionary:O
in:O
Congress:organization-politicalparty
Socialist:organization-politicalparty
Party:organization-politicalparty
in:O
his:O
native:O
place:O
Sonpur:location-GPE
.:O