Question: The professor of bioengineering Valerie Daggett worked with which American-British-Israeli biophysicist and a professor of structural biology who has been professor at Stanford University since 1987?
Sentence (from "Xiaoyuan (Shawn) Chen"): He then moved to Stanford University in 2004 to help build the Molecular Imaging Program at Stanford (MIPS) under the directorship of Professor Sanjiv Sam Gambhir, and was promoted to Associate Professor in 2008.
Relevant evidence: No