Assertion: supernova | /r/HasProperty | stellar explosion
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Source sentences:
text: A supernova (plural supernovae) is a stellar explosion which produces an extremely bright object made of plasma that declines to invisibility over weeks or months.
text: A supernova is a stellar explosion that produces an extremely bright object made of plasma that declines to invisibility over weeks or months.
text: Scientists have observed the biggest supernova — stellar explosion — ever detected, the violent death of a huge star up to 100 times more massive than our sun in a faraway galaxy.