Assertion: sewage's waste | /r/HasProperty | collected until the mid-20th century
Facets:
value: generally
type: DEGREE
Source sentences:
text: Until the mid-20th century, solid wastes were generally collected and placed on top of the ground in uncontrolled “open dumps,” which often became breeding grounds for rats, mosquitoes, flies, and other disease carriers and were sources of unpleasant odours, windblown debris, and other nuisances.