Write an inquisitive question about a specific text span in a given sentence such that the answer is not in the text.

Example input: Sentence: The Obama administration is developing additional screening protocols for airline passengers both overseas and in the United States to control infectious diseases such as Ebola, President Barack Obama said Monday .<sep>Span: Obama administration
Example output: What was the duration of the Obama administration?
Example explanation: It is an inquisitive question based on the specific span of the sentence.
Q: Sentence: On the 21st floor of the downtown Prudential Building , about 25 operators in blue shaded cubicles are talking on telephone headsets while a dozen more callers wait on hold .<sep>Span: downtown
A:
What city is this located in?