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 ":".
The
building
is
considered
one
of
the
most
significant
modern
buildings
in
the
historic
center
of
Rome
.
The:O
building:O
is:O
considered:O
one:O
of:O
the:O
most:O
significant:O
modern:O
buildings:O
in:O
the:O
historic:O
center:O
of:O
Rome:location-GPE
.:O