Assertion: acid rain | /r/HasProperty | rain
Facets:
Source sentences:
text: Acid precipitation is rain (or other precipitation) that is unusually acidic ( has a pH below 6).
text: Acid precipitation is rain (or other precipitation) that is unusually acidic ( has a pH below 6).
text: Introduction to Acid Rain Acid rain is a widespread term used to describe all forms of acid precipitation (rain, snow, hail, fog, etc.).