With no explanation, label each line with "O", "product-software", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
Jami
and
Ricochet
the
identifier
is
the
user
's
call-sign
itself
.
Jami:product-software
and:O
Ricochet:product-software
the:O
identifier:O
is:O
the:O
user:O
's:O
call-sign:O
itself:O
.:O