With no explanation, label each line with "product-other", "O", "organization-company", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
T-Mobile
denied
the
problems
at
first
by
telling
complaining
customers
that
their
mobile
phone
or
SIM-card
was
causing
the
problem
.
T-Mobile:organization-company
denied:O
the:O
problems:O
at:O
first:O
by:O
telling:O
complaining:O
customers:O
that:O
their:O
mobile:O
phone:O
or:O
SIM-card:product-other
was:O
causing:O
the:O
problem:O
.:O