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 ":".
It
also
served
as
an
effective
link
between
the
growing
parts
of
the
French
empire
.
It:O
also:O
served:O
as:O
an:O
effective:O
link:O
between:O
the:O
growing:O
parts:O
of:O
the:O
French:location-GPE
empire:location-GPE
.:O