<s>
We	O
say	O
that	O
two	O
probability	B-General_Concept
ensembles	I-General_Concept
and	O
are	O
statistically	B-General_Concept
close	I-General_Concept
if	O
is	O
a	O
negligible	O
function	O
in	O
.	O
</s>
