With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Ronald Reagan came after George Washington.
text_B: Water and Power is a 1989 experimental documentary film by Pat O'Neill .. Pat O'Neill. Pat O'Neill ( filmmaker ). It won the Documentary Grand Jury Prize at the 1990 Sundance Film Festival .. Sundance Film Festival. Sundance Film Festival. It was selected to the United States National Film Registry in 2009 as `` culturally , historically , or aesthetically significant '' .. National Film Registry. National Film Registry
not_related.