Question: Which city has a higher population, Xinzheng or Tianshui?
Sentence (from "Racial threat"): More specifically, the racial threat hypothesis or racial threat theory proposes that a higher population of members of a minority race results in the dominant race imposing higher levels of social control on the subordinate race, which, according to this hypothesis, occurs as a result of the dominant race fearing the subordinate race's political, economic, or criminal threat.
Relevant evidence: No