With no explanation, label each line with "location-GPE", "O", "building-other", "organization-company", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting" or "art-writtenart" preceded by ":".
The
first
to
be
constructed
in
South
India
,
the
Royapuram
station
served
as
the
headquarters
of
the
Madras
Railway
Company
.
The:O
first:O
to:O
be:O
constructed:O
in:O
South:O
India:location-GPE
,:O
the:O
Royapuram:building-other
station:O
served:O
as:O
the:O
headquarters:O
of:O
the:O
Madras:organization-company
Railway:organization-company
Company:organization-company
.:O