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 ":".
During
the
construction
of
the
tram
system
,
the
Unterpflaster
was
put
in
the
middle
of
the
Wiedner
Hauptstrasse
.
During:O
the:O
construction:O
of:O
the:O
tram:O
system:O
,:O
the:O
Unterpflaster:O
was:O
put:O
in:O
the:O
middle:O
of:O
the:O
Wiedner:location-GPE
Hauptstrasse:location-GPE
.:O