With no explanation, label text_A→text_B with either "not-entailed" or "entailed".
text_A: China 's overtures to join the U.S. - led effort to develop the 16 - nation international space station have been thwarted for more than a decade over a range of issues , including the Asian country 's human rights policies and worries it could acquire technologies that could pose a security threat .
text_B: The joining did not happen
entailed.