With no explanation, label each line with "building-other", "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
On
April
24
,
1983
,
a
pair
of
weekday
trains
–
the
9:54am
arrival
and
3:55pm
departure
from
Suburban
Station
–
were
renamed
``
Keystone
Executive
''
.
On:O
April:O
24:O
,:O
1983:O
,:O
a:O
pair:O
of:O
weekday:O
trains:O
–:O
the:O
9:54am:O
arrival:O
and:O
3:55pm:O
departure:O
from:O
Suburban:building-other
Station:building-other
–:O
were:O
renamed:O
``:O
Keystone:O
Executive:O
'':O
.:O