Assertion: vinegar's mother | /r/Causes | fermentation
Facets:
value: in cider
type: LOCATION
value: in wine
type: LOCATION
Source sentences:
text: ('Mother' is a stringy, slimy substance that forms on the surface of vinegar, composed of various yeast and bacteria [especially mycoderma aceti] that cause fermentation in wine and cider, and turn it into acetic acid - vinegar).