Assertion: calendar's month | /r/CapableOf | fail to contain point
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Source sentences:
text: Supposedly, each of the 12 months of the year contains two points, but, because a lunar month has only 29 ½ days and the two points share about 30.4 days, there is always the chance that a lunar month will fail to contain both points, though the distance between any two given points is only 15º.