With no explanation, label each line with "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport", "building-hospital" or "building-hotel" preceded by ":".
However
,
there
is
not
any
historical
evidence
about
the
use
of
this
cross
.
However:O
,:O
there:O
is:O
not:O
any:O
historical:O
evidence:O
about:O
the:O
use:O
of:O
this:O
cross:O
.:O