Assertion: sewage's waste | /r/HasProperty | major environmental issue
Facets:
value: in developing countries
type: LOCATION
value: everywhere since the industrial revolution
type: TEMPORAL
Source sentences:
text: Waste has been a major environmental issue everywhere since the industrial revolution.
text: Agricultural waste, which is considered a major environmental problem in developing countries as discussed in Chapter 7, can be added to the compost to adjust the carbon to nitrogen ratio and enhance the fermentation process.