Assertion: leap year's day | /r/CapableOf | fall on february
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Source sentences:
text: This extra day, which falls on February 29 and is called Leap Day or Leap Year Day, exists to keep the calendar year in synchrony with the astronomical year, or the time it takes Earth to make a full rotation around the sun.
text: A leap year is a year with 366 days instead of 365, the extra day falling on February 29 when every other year the month would end on February 28.
text: The extra day falls on February 29, which is called Leap Year Day.