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
was
united
with
the
Principality
of
Calenberg
,
which
had
been
elevated
in
1692
into
the
Electorate
.
It:O
was:O
united:O
with:O
the:O
Principality:location-GPE
of:location-GPE
Calenberg:location-GPE
,:O
which:O
had:O
been:O
elevated:O
in:O
1692:O
into:O
the:O
Electorate:O
.:O