Assertion: comet's period | /r/HasProperty | orbital
Facets:
Source sentences:
text: Comets are often classified according to the length of their orbital periods:
text: Comets are often classified according to the length of their orbital periods:
text: Comets are often classified according to the length of their orbital periods: the longer the period the more elongated the ellipse.
text: Comets are often classified according to the length of their orbital periods: