With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: The AK-47 was not the basis for developing other firearms.
text_B: The Second Order Intercept Point , also known as the SOI , IP2 , or IIP2 -LRB- Input Intercept Point -RRB- , is a measure of linearity that quantifies the second-order distortion generated by nonlinear systems and devices .. Examples of frequently used devices that are concerned with this measure are amplifiers and mixers .. amplifiers. amplifiers. mixers. Frequency mixer. It is related to the third-order intercept point , which is generally used for quantifying degree of nonlinearity of a nonlinear system or it can also be used to estimate the nonlinear products present at the output of such a system .. nonlinear system. nonlinear system. third-order intercept point. third-order intercept point
not_related.