Assertion: glacier | /r/MadeOf | water
Facets:
Source sentences:
text: They contain water, rocks and sediments.
text: Current estimates predict all the glaciers in the world contain enough water to raise sea level by as much as 24 inches (about 60 centimeters).
text: Glaciers are made of ice and snow, but also contain water, air and eroded rocks (scraped from the bedrock or added by rockfalls from adjacent cliffs).