Assertion: cyclone's strength | /r/CapableOf | undergo a 50–70 year cycle
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Source sentences:
text: The number and strength of Atlantic hurricanes may undergo a 50–70 year cycle, also known as the Atlantic Multidecadal Oscillation.
text: The number and strength of Atlantic hurricanes may undergo a 50–70 year cycle, also known as the Atlantic Multidecadal Oscillation.