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
tramway
lines
of
Stadtbahn
Glattal
are
a
rapid-transit
system
integrated
with
the
tramway
system
of
the
city
of
Zurich
.
The:O
tramway:O
lines:O
of:O
Stadtbahn:location-GPE
Glattal:location-GPE
are:O
a:O
rapid-transit:O
system:O
integrated:O
with:O
the:O
tramway:O
system:O
of:O
the:O
city:O
of:O
Zurich:location-GPE
.:O