With no explanation, label text_A→text_B with either "DON'T KNOW", "NO" or "YES".
text_A: John Ross gathered over 15,000 signatures for a petition to the U.S. Senate, insisting that the treaty was baseless because it did not have the support of the majority of the Cherokee people. The Senate passed the Treaty of New Echota by a one-vote margin. It was enacted into law in May 1836.
text_B: Would it have been very difficult for a Senator in 1836 to speak with any of the people who signed John Ross's petition?
NO.