Assertion: peak's eruption | /r/HasProperty | observed
Facets:
value: between 1914
type: TEMPORAL
value: between 1921
type: TEMPORAL
Source sentences:
text: In total, about 400 eruptions were observed between 1914 and 1921, which were the last eruptions in the Cascades before the 1980 eruption of Mount St. Helens, which was the only other volcanic eruption in the contiguous United States during the 20th century.