Walter's Weird Night<br>Walter noticed something strange in the sky one night. He didn't believe in space aliens, but he was confused. He was sure he had seen a flying saucer in the night sky. Then he saw on the news that a weather balloon had crashed. Walter was relieved that aliens hadn't come visiting after all.
He saw the moon and sun in the sky.
( z1 see :ARG0 ( z2 he ) :ARG1 ( z3 and :op ( z4 moon ) :op ( z5 sun ) ) :location ( z6 sky ) )