With no explanation, label text_A→text_B with either "not-entailed" or "entailed".
text_A: Small polygamous groups have existed in the southwestern US under the watchful yet fairly benign eye of authorities ever since a sect known as the Fundamentalist Latter Day Saints ( FLDS ) separated itself from mainstream Mormonism in 1890 .
text_B: The separating did not happen
not-entailed.