With no explanation, label each line with "location-GPE", "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
By
the
end
of
this
migration
,
India
was
left
with
the
Proto-Indo-Aryans
.
By:O
the:O
end:O
of:O
this:O
migration:O
,:O
India:location-GPE
was:O
left:O
with:O
the:O
Proto-Indo-Aryans:O
.:O