{"sentence1": "Mark was close to Mr. Singer's heels. He heard him calling for the captain, promising him, in the jargon everyone talked that night, that not one thing should be damaged on the ship except only the ammunition, but the captain and all his crew had best stay in the cabin until the work was over.", "sentence2": "The captain and all Mark's crew had best stay in the cabin until the work was over.", "label": 0}

{"sentence1": "Look! There is a shark swimming right below that duck! It had better get away to safety fast!", "sentence2": "The duck had better get away to safety fast!", "label": 1}

{"sentence1": "I couldn't put the pot on the shelf because it was too tall.", "sentence2": "The pot was too tall.", "label": 1}
{"sentence1": "During the Apollo 11 mission, Neil Armstrong and his colleague carefully monitored the oxygen levels. He was aware that running low would be catastrophic.", "sentence2": "His colleague was aware that running low would be catastrophic.", "label": 0}