Assertion: dinosaur's foot | /r/HasProperty | 12 to 13 meters
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Source sentences:
text: The largest specimens may have rivaled T. rex in size, growing up to 39 to 43 feet (12 to 13 meters) long and 15 to 16 feet (4.5 to 5 meters) tall, according to a 1976 analysis of A. fragilis in the Utah Geological Survey Bulletin.