Assertion: rugby's history | /r/CapableOf | fall into five stages of development
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Source sentences:
text: The history of Canadian sports falls into five stages of development: early recreational activities before 1840; the start of organized competition, 1840-1880; the emergence of national organizations, 1882-1914; the rapid growth of both amateur and professional sports, 1914 to 1960; and developments of the last century