Assertion: valerian | /r/CapableOf | improve sleep quality
Facets:
Source sentences:
text: Valerian has been shown to encourage sleep, improve sleep quality and reduce blood pressure.
text: It has also been reported that valerian improves sleep quality.
text: According to "The Healing Power of Herbs," research involving 128 subjects found that valerian improved sleep quality and shortened the amount of time needed to fall asleep.
text: Valerian has been shown to encourage sleep, improve sleep quality and reduce blood pressure.