With no explanation, label each line with "O", "art-other", "art-broadcastprogram", "art-film", "art-music", "art-painting", "art-writtenart", "building-airport", "building-hospital" or "building-hotel" preceded by ":".
A
rough
hewn
stone
of
grey
Gneiss
,
the
stone
was
identified
as
Pictish
in
1901
.
A:O
rough:O
hewn:O
stone:O
of:O
grey:O
Gneiss:O
,:O
the:O
stone:O
was:O
identified:O
as:O
Pictish:art-other
in:O
1901:O
.:O