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 ":".
It
has
been
stated
that
any
substance
can
be
toxic
at
a
high
enough
dose
.
It:O
has:O
been:O
stated:O
that:O
any:O
substance:O
can:O
be:O
toxic:O
at:O
a:O
high:O
enough:O
dose:O
.:O