Question: According to the 2010 census, what was the population of the city in which Robert Milton "Bob" Hartsfield was born?
Sentence (from "Altoona, Pennsylvania"): This includes the adjacent boroughs of Hollidaysburg and Duncansville, adjacent townships of Logan, Allegheny, Blair, Frankstown, Antis, and Tyrone, as well as nearby boroughs of Bellwood and Newry.
Relevant evidence: No