Assertion: asteroid belt's object | /r/HasProperty | discovered by the end of 1851
Facets:
Source sentences:
text: By the end of 1851 14 other similar objects had been discovered and it did not take long before these instead became known as “minor planets”.
text: By the end of 1851 14 other similar objects had been discovered and it did not take long before these instead became known as “minor planets”.