With no explanation, label each line with "location-GPE", "O", "organization-politicalparty", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
Later
Arunachal
Congress-
Mithi
merged
with
Kerala
Congress
B
.
Later:O
Arunachal:O
Congress-:O
Mithi:organization-politicalparty
merged:O
with:O
Kerala:location-GPE
Congress:O
B:O
.:O