With no explanation, label text_A→text_B with either "DON'T KNOW", "NO" or "YES".
text_A: "Dsungaripterus weii" had a wing span of 3 to 3.5 meters (9.8 to 11.5 ft). Like most dsungaripteroids it had a rather robust skeleton with thick walls and stouty bodily proportions, suggesting a mostly terrestrial lifestyle. The flight style of these animals is unclear, but it was probably punctuated by abrupt landings and extensive flapping.
text_B: If you spotted a Dsungaripterus weii in flight, is probable that you'd see large amount of wing movement?
YES.