Assertion: quasar | /r/CapableOf | provide clue
Facets:
Source sentences:
text: Quasars also provide some clues as to the end of the Big Bang's reionization.
text: Quasars also provide some clues as to the end of the Big Bang's reionization.
text: Quasars also provide some clues as to the end of the Big Bang's reionization.