Assertion: comet | /r/HasProperty | discovered by instrument
Facets:
value: in recent years
type: TEMPORAL
Source sentences:
text: In recent years, many comets have been discovered by instruments operated by large teams of astronomers, and in this case, comets may be named for the instrument.
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.