Input (grade 11): In his 2004 book Two Sides of the Moon, Alexey Leonov recounts that he was flying a helicopter in the same area that day when he heard "two loud booms in the distance."
Output (grade 11): In his 2004 book Two Sides of the Moon, Alexey Leonov tells that he was flying a helicopter in the same area that day when he heard "two loud booms in the distance."