Assertion: comet's make up | /r/HasProperty | unusual
Facets:
Source sentences:
text: The first known comet to visit us from another star system has an unusual make-up, according to new research.
text: The first known comet to visit us from another star system has an unusual make-up, according to new research.
text: The first known comet to visit us from another star system has an unusual make-up.
text: The first known comet to visit us from another star system has an unusual make-up, according to new research.