Assertion: comet's designation | /r/HasProperty | 1p/halley
Facets:
Source sentences:
text: When the comet returned as predicted, it became known as Comet Halley or Halley's Comet (its official designation is 1P/Halley).
text: When the comet returned as predicted, it became known as Comet Halley or Halley's Comet (its official designation is 1P/Halley).