Assertion: peat's material | /r/HasProperty | sphagnum
Facets:
Source sentences:
text: Peat moss and peat humus are both originated in a peat bog but peat moss is partially decayed organic material (Sphagnum) found on top of peat bogs.
text: The most-used material is Sphagnum moss peat, which is the main material building up in bogs in the Northern hemisphere.