Assertion: trumpeter swan's neck | /r/HasProperty | stained rust-brown
Facets:
value: in marsh soils
type: LOCATION
value: from ferrous minerals
type: OTHER
value: often
type: TEMPORAL
Source sentences:
text: Its head and neck is often stained rust-brown from ferrous minerals in marsh soils.
text: Its head and neck is often stained rust-brown from ferrous minerals in marsh soils.