Assertion: nebula's ring | /r/CapableOf | appear as dense region
Facets:
value: at first sight
type: TEMPORAL
value: equatorially
type: MANNER
Source sentences:
text: The bright elliptical ring in the centre of the Hourglass Nebula appears as an equatorially dense region at first sight, but is really a potato-shaped structure with a significantly different symmetry axis from that of the larger nebula.