Assertion: variable's level | /r/HasProperty | the yummytooth toothpaste
Facets:
Source sentences:
text: In this study, the toothpaste was the independent variable; it was different between the two groups: one level was the YummyTooth toothpaste itself, and the second level (a control group) was the identical non-YummyTooth toothpaste (a placebo).