<s>
Necessary	B-General_Concept
Condition	I-General_Concept
Analysis	I-General_Concept
(	O
NCA	O
)	O
is	O
a	O
quantitative	O
data	O
analytical	O
technique	O
for	O
identifying	O
necessary	O
(	O
but	O
not	O
sufficient	O
)	O
conditions	O
in	O
data	O
sets	O
.	O
</s>
