Task: songer_usc1

What follows is an opinion from a United States Court of Appeals.
Your task is to identify the most frequently cited title of the U.S. Code in the headnotes to this case. Answer "0" if no U.S. Code titles are cited. If one or more provisions are cited, code the number of the most frequently cited title.

OPINION OF THE COURT
PER CURIAM:
Upon consideration of the petition for a writ of mandamus to the Honorable-Ralph C. Body, United States District Judge for the Eastern District of Pennsylvania, Nominal Respondent, in the above entitled ease, it is ordered that plaintiffs’ petition for a writ of mandamus be and it hereby is denied.

Question: What is the most frequently cited title of the U.S. Code in the headnotes to this case? Answer with a number.
Answer:

Answer: 0