Question: What is the date of death of Anna Halprin's husband?
Sentence (from "Lawrence Halprin"): Gradually accumulating a regional reputation in the northwest, Halprin first came to national attention with his work at the 1962 Seattle World's Fair, the Ghirardelli Square adaptive-reuse project in San Francisco, and the landmark pedestrian street / transit mall Nicollet Mall in Minneapolis.
Relevant evidence: No