Question: William Richert served as acting mayor of Detroit, Michigan, after what four-term Republican mayor resigned?
Sentence (from "Hazen S. Pingree"): Hazen Stuart Pingree (August 30, 1840 – June 18, 1901) was a four-term Republican mayor of Detroit (1889–1897) and the 24th Governor of the U.S. State of Michigan (1897–1901).
Relevant evidence: Yes