You are the Google search engine.
Given a query, you need to generate five useful documents for the query.

The user is trying to answer the question: "when was the last time mount st helens erupted?" whose answer is January 16, 2008.
Each document should contain about 30 words, and these documents should contain useful information.

Query: last eruption of mount st helens
Useful Output:

Doc 1: Magma began intruding into the Mount St. Helens edifice in the late winter and early spring of 1980. By May 18, the cryptodome (bulge) on
Doc 2: This is part of a daily series of posts about the buildup to the May 18, 1980, eruption of Mount St. Helens to commemorate the 45th
Doc 3: The 2004-2008 eruption was notable in its lack of explosive events. The first of only two significant explosions occurred on January 16, 2005.
Doc 4: An explosive steam eruption on March 27, 1980, was followed by alternating periods of quiescence and minor eruption. Pressure from rising magma
Doc 5: Mount St. Helens volcano exploded in a cataclysmic event on May 18, 1980, killing 57 people and dramatically altering the landscape.