What follows is an opinion from a United States Court of Appeals.
Intervenors who participated as parties at the courts of appeals should be counted as either appellants or respondents when it can be determined whose position they supported. For example, if there were two plaintiffs who lost in district court, appealed, and were joined by four intervenors who also asked the court of appeals to reverse the district court, the number of appellants should be coded as six.
When coding the detailed nature of participants, use your personal knowledge about the participants, if you are completely confident of the accuracy of your knowledge, even if the specific information is not in the opinion. For example, if "IBM" is listed as the appellant it could be classified as "clearly national or international in scope" even if the opinion did not indicate the scope of the business. 

Your task concerns the first listed appellant. The nature of this litigant falls into the category "natural person (excludes persons named in their official capacity or who appear because of a role in a private organization)". Your task is to determine the citizenship of this litigant as indicated in the opinion.

Opinion:
Vernon JOHNSON, Appellant, v. GRIM-SMITH HOSPITAL et al., Appellees.
No. 71-1311.
United States Court of Appeals, Eighth Circuit.
Jan. 25, 1972.
James B. Morris, Jr., Morris & Morris, Des Moines, Iowa, for appellant.
William Y. Frick, Frick & Mayberry, Kirksville, Mo., for appellees, Grim-Smith Hospital and Robert William Buben.
Before VAN OOSTERHOUT and STEPHENSON, Circuit Judges, and REGISTER, District Judge;
PER CURIAM.
Plaintiff takes this timely appeal from final judgment dismissing his malpractice action on motion for summary judgment on the ground that the action is barred by the two-year statute of limitations governing malpractice actions. (§ 516.140 RSMol959, V.A.M.S.).
The facts and basis of decision are fairly set forth in Judge Wangelin’s opinion reported at 326 F.Supp. 537.
Plaintiff upon appeal strongly urges that summary judgment was improper because disputed fact issues exist. Summary judgment of course is inappropriate where a dispute exists as to a material fact. The record consists of the pleadings, affidavits, interrogatories, answers thereto and depositions. While some factual disputes exist, the trial court assumed for the purpose of his ruling that representations were made as stated by the plaintiff. The court then determined that, under the controlling Missouri law set forth in its opinion, the record when viewed in the light most favorable to the plaintiff afforded no basis for tolling the statute of limitations. The trial court’s decision is not based upon the resolution of material factual issues.
We agree with the view of the trial court that no dispute exists as to material facts. The facts as urged by the plaintiff and accepted by the trial court for the purpose of ruling on the motion are inadequate upon the basis of controlling Missouri law to support a finding that the statute of limitations was tolled.
The judgment of dismissal is affirmed.

Question: This question concerns the first listed appellant. The nature of this litigant falls into the category "natural person (excludes persons named in their official capacity or who appear because of a role in a private organization)". What is the citizenship of this litigant as indicated in the opinion?

Choices:
not ascertained
US citizen
alien

Answer: 0