With no explanation, label each line with "product-other", "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
RTF
files
can
be
easily
transmitted
between
PC
based
operating
systems
because
they
are
encoded
as
a
text
file
with
7-bit
graphic
ASCII
characters
.
RTF:product-other
files:O
can:O
be:O
easily:O
transmitted:O
between:O
PC:product-other
based:O
operating:O
systems:O
because:O
they:O
are:O
encoded:O
as:O
a:O
text:O
file:O
with:O
7-bit:O
graphic:O
ASCII:product-other
characters:O
.:O