Assertion: amusement park's roller coaster | /r/HasProperty | opened in may
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Source sentences:
text: In 1914, the Pike Amusement Zone undertook several upgrades and a new roller coaster named the Jack Rabbit Racer was opened in May 1915, becoming the second largest racing coaster in the country.
text: In May 2015, the newest roller coaster was opened in Cedar Point.