Question: What city does Jaros, Baum & Bolles and Willis Tower have in common?
Sentence (from "Jaros, Baum &amp; Bolles"): Jaros, Baum & Bolles (JB&B) is an American MEP (Mechanical, electrical, and plumbing) and building systems engineering firm founded in 1915 by Alfred L. Jaros, Jr. and Albert L. Baum.
Relevant evidence: No