Assertion: peat | /r/HasProperty | the precursor
Facets:
value: to coal.”2
type: OTHER
Source sentences:
text: A vast network of swamps covered large parts of North America at this time and much of the organic material created in these wetlands accumulated to form thick layers of peat (the precursor to coal) that were buried faster than they could decay.
text: Peat, a precursor to coal, offers no nutritional value to the plants, but improves the soil by aeration and absorbing water.
text: According to the United States Geological Survey, “Peat is the precursor to coal.”2