With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Minnesota has a high suicide rate.
text_B: In mathematics , the Frobenius inner product is a binary operation takes two matrices and returns a number .. mathematics. mathematics. matrices. matrix ( mathematics ). inner product. inner product. It is often denoted .. The operation is a component-wise inner product of two matrices as though they are vectors .. matrices. matrix ( mathematics ). inner product. inner product. The two matrices must have the same dimension -- same number of rows and columns -- but are not restricted to be square matrices .. matrices. matrix ( mathematics ). square matrices. square matrix
not_related.