Assertion: urea formaldehyde | /r/HasProperty | released into the air
Facets:
value: in low concentrations
type: TEMPORAL
value: over time
type: TEMPORAL
value: from the wood
type: TRANSITIVE-OBJECT
Source sentences:
text: MDF is made through the use of urea-formaldehyde, which, over time, is released into the air from the wood in low concentrations.