With no explanation, label each line with "O", "location-mountain", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
The
construction
of
a
number
of
barrows
on
the
top
of
Chanctonbury
Hill
suggests
that
the
hilltop
was
seen
as
an
area
of
special
significance
,
perhaps
because
of
its
high
visibility
.
The:O
construction:O
of:O
a:O
number:O
of:O
barrows:O
on:O
the:O
top:O
of:O
Chanctonbury:location-mountain
Hill:location-mountain
suggests:O
that:O
the:O
hilltop:O
was:O
seen:O
as:O
an:O
area:O
of:O
special:O
significance:O
,:O
perhaps:O
because:O
of:O
its:O
high:O
visibility:O
.:O