Assertion: comet | /r/HasProperty | given unique name
Facets:
Source sentences:
text: Today, the large numbers of comets discovered by some instruments makes this system impractical, and no attempt is made to ensure that each comet is given a unique name.
text: Today, the large numbers of comets discovered by some instruments has caused this system to be impractical, and no attempt is made to ensure that each comet is given a unique name.