With no explanation, label each line with "location-GPE", "O", "other-law", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
One
of
the
provisions
of
the
1739
Treaty
of
Belgrade
stated
that
Austria
had
to
demolish
all
the
fortifications
and
military
and
civilian
buildings
it
has
constructed
during
the
occupation
.
One:O
of:O
the:O
provisions:O
of:O
the:O
1739:other-law
Treaty:other-law
of:other-law
Belgrade:other-law
stated:O
that:O
Austria:location-GPE
had:O
to:O
demolish:O
all:O
the:O
fortifications:O
and:O
military:O
and:O
civilian:O
buildings:O
it:O
has:O
constructed:O
during:O
the:O
occupation:O
.:O