With no explanation, label each line with "O", "location-road/railway/highway/transit", "location-mountain", "event-sportsevent", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting" or "art-writtenart" preceded by ":".
The
oldest
and
most
popular
ski
run
is
Stenata
(
‘
The
Wall
’
)
,
while
the
longest
and
most
difficult
one
is
‘
Vitoshko
Lale
’
originally
built
for
the
1983
Winter
Universiade
held
on
Vitosha
.
The:O
oldest:O
and:O
most:O
popular:O
ski:O
run:O
is:O
Stenata:location-road/railway/highway/transit
(:O
‘:O
The:O
Wall:location-road/railway/highway/transit
’:O
):O
,:O
while:O
the:O
longest:O
and:O
most:O
difficult:O
one:O
is:O
‘:O
Vitoshko:location-road/railway/highway/transit
Lale:location-road/railway/highway/transit
’:O
originally:O
built:O
for:O
the:O
1983:O
Winter:event-sportsevent
Universiade:event-sportsevent
held:O
on:O
Vitosha:location-mountain
.:O