With no explanation, label text_A→text_B with either "DON'T KNOW", "NO" or "YES".
text_A: As the construction of the building neared the 50th floor, lawsuits for an injunction were filed seeking to prevent the building from having more than 67 floors. The suits alleged that above that point television reception would deteriorate and cause property values to plummet. The first suit was filed by the state attorney in neighboring Lake County on March 17, 1972. A second suit was filed on March 28 in Cook County Circuit Court by the villages of Skokie, Northbrook, and Deerfield, Illinois.
text_B: Has the construction of the building been interrupted at any time?
DON'T KNOW.