Assertion: existing mattress | /r/HasProperty | cheap
Facets:
value: particularly
type: DEGREE
Source sentences:
text: An industry-funded 2006 study by researchers at Oklahoma State University (funded by the BSC) of 59 people with poor sleep who received free new replacement mattresses for their existing mattresses 5 years or older (average age 9.5 years) found improved sleep, particularly when the existing mattresses were cheap.