What follows is an opinion from a United States Court of Appeals. Your task is to identify the type of district court decision or judgment appealed from (i.e., the nature of the decision below in the district court).

Opinion:
Sam DiPIAZZA, Appellant, v. UNITED STATES of America, Appellee.
No. 71-1992.
United States Court of Appeals, Sixth Circuit.
Argued Oct. 9, 1972.
Decided Jan. 12, 1973.
Louis A. DiRosa, New Orleans, La., for appellant; Guy Johnson, New Orleans, La., on brief.
William W. Milligan, U. S. Atty., Byron E. Trapp, Asst. U. S. Atty., Cincinnati, Ohio, Robert J. Vedatsky, Dept. of Justice, Washington, D. C., for appellee; Henry E. Petersen, Asst. Atty. Gen., Sidney M. Glazer, Dept. of Justice, Washington, D. C., on brief.
Before PHILLIPS, Chief Judge, WEICK, Circuit Judge, and BRATCHER, District Judge
Honorable Rhodes Bratcher, Judge, United States District Court for the Western District of Kentucky, sitting by designation.
PER CURIAM.
Appellant was convicted in a jury trial in the Southern District of Ohio of seven counts of. using interstate facilities to promote an illegal gambling enterprise and one count of conspiracy in violation of 18 U.S.C. §§ 1952, and 371. The conviction was affirmed by this court. 415 F.2d 99 (1969), cert. denied, 402 U.S. 949, 91 S.Ct. 1606, 29 L.Ed.2d 119 rehearing denied, 403 U.S. 924, 91 S.Ct. 2221, 29 L.Ed.2d 702 (1971).
Appellant then filed a motion to vacate sentence, 28 U.S.C. § 2255, on the grounds that the District Judge’s charge to the jury was incorrect. He appeals from the denial of this motion.
It is well settled in this circuit that a motion to vacate is not a proper substitute for appeal. Petro v. United States, 368 F.2d 807 (6th Cir. 1968); Hill v. United States, 223 F.2d 699, 701 (6th Cir.), cert. denied, 350 U.S. 867, 76 S.Ct. 113, 100 L.Ed. 768 (1955). Furthermore, jury instructions are not subject to attack under § 2255. Hollbrook v. United States, 441 F.2d 371 (6th Cir. 1971).
Affirmed.

Question: What is the type of district court decision or judgment appealed from (i.e., the nature of the decision below in the district court)?

Choices:
Trial (either jury or bench trial)
Injunction or denial of injunction or stay of injunction
Summary judgment or denial of summary judgment
Guilty plea or denial of motion to withdraw plea
Dismissal (include dismissal of petition for habeas corpus)
Appeals of post judgment orders (e.g., attorneys' fees, costs, damages, JNOV - judgment nothwithstanding the verdict)
Appeal of post settlement orders
Not a final judgment: interlocutory appeal
Not a final judgment: mandamus
Other (e.g., pre-trial orders, rulings on motions, directed verdicts) or could not determine nature of final judgment
Does not fit any of the above categories, but opinion mentions a "trial judge"
Not applicable (e.g., decision below was by a federal administrative agency, tax court)

Answer: 9