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:
Costas TSIMOUNIS, Appellant, v. J. W. HOLLAND, District Director, Immigration and Naturalization Service.
No. 11750.
United States Court of Appeals Third Circuit.
Argued Dec. 9, 1955.
Decided Jan. 6, 1956.
J. J. .Kilimnik, Philadelphia, Pa., for appellant.
Eugene J. Bradley, Asst. U. S. Atty., Philadelphia, Pa., for appellee.
Before McLAUGHLIN, KALODNER and HASTIE, Circuit Judges.
PER CURIAM.
Appellant, an alien seaman, filed a complaint in the district court seeking review of an order of the Department of Justice, Immigration and Naturalization Service, to deport him. A temporary restraining order was issued and the Government moved for summary judgment. The application for injunction and the Government’s motion were combined for hearing at which time appellant testified. Following that testimony his counsel advised the court he would "‘[r]est on the record as presented to the Immigration authorities plus what the plaintiff testified to today.” What actually took place was in effect a final hearing on the merits of appellant’s complaint. There is no contention that any other or further evidence should have been or could have been presented on behalf of the appellant.
It is urged for appellant that he was illegally arrested and subjected to illegal search and seizure, that the deportation proceeding should have been conducted by a hearing examiner under the' Administrative Procedure Act, 5 U.S.C.A. § 1001 et seq. and that the deportation order was not based upon reasonable, substantial and probative evidence.
The deportation proceedings were properly heard before a Special Inquiry Officer. Section 242(b) Immigration and Nationality Act, 8 U.S.C.A. § 1252(b); 8 U.S.C.A. § 1101(b); 8 .C.F.R. § 9.1(b). And see Marcello v. Bonds, 1955, 349 U.S. 302, 75 S.Ct. 757. The record is clear that, as found by the district court, there was no illegal arrest or illegal search and seizure. In the situation, under 8 U.S.C.A. § 1357(a) (1, 2) the patrol inspectors were entitled to interrogate appellant and to arrest him in the reasonable belief he was in this country illegally. Appellant himself testified that the documents now asserted to have been illegally seized from him were given by him voluntarily to the inspectors. They consisted of appellant’s passport and a personal letter.
The proofs are conclusive that appellant is in this country without an unexpired immigration visa and had the intention of staying as long as he could. He is here illegally. 8 U.S.C.A. § 1181 (a).
The judgment of the district court will be affirmed.
. 1955, 132 F.Supp. 754.

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: 2