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 "federal government (including DC)". Your task is to determine which category of federal government agencies and activities best describes this litigant.

Opinion:
ALLEN, Collector of Internal Revenue for the District of Nebraska, v. BRANDEIS. UNITED STATES v. SAME.
Circuit Court of Appeals, Eighth Circuit.
November 17, 1928.
Nos. 8031, 8032.
T. H. Lewis, Jr., Sp. Atty., Bureau of Internal Revenue, of Washington, D. C. (C. M. Charest, General Counsel, Bureau of Internal Revenue, of Washington, D. C., and James C. Kinsler, U. S. Atty., of Omaha,Neb., on the brief), for plaintiffs in error.
John L. Kennedy, of Omaha, Neb. (Jay C. Halls, Albert L. Hopkins, and O. John Rogge, all of Chicago, Ill., on the brief), for defendant in error.
Before BOOTH, Circuit Judge, and POLLOCK and DEWEY, District Judges.
POLLOCK, District Judge.
Defendant in error, plaintiff' below, was the wife of Arthur D. Brandéis of Omaha, Neb. Arthur D. Brandéis, a man of large wealth, died' testate June 10, 1916. By the laws of the state Mrs. Brandéis was entitled to receive as her dower right out of the estate a very large sum of money or property measured in money at the sum of $483,727.79. Of no part of this amount could the will of her husband deprive her without her consent. At his decease it became her interest in his estate, due and payable to her out of his estate. By the terms of his will provision was made for her, as follows:
“Eighth. I give- and bequeath to my beloved Wife, Zerlina Brandéis, Ten Thousand Dollars ($10,000.00) to be expended by her for charitable and benevolent purposes.
“Ninth. I give and bequeath to my beloved wife, Zerlina Brandéis, all my automobiles and household furniture and effects, for her sole use and benefit absolutely forever.
“Tenth. I give and bequeath to my beloved wife, Zerlina Brandéis, Fifty Thousand Dollars ($50,000.00) per annum, to be paid to her each year in equal quarterly instal-ments, for her sole use and benefit during her natural life; said bequest and payments to be in lieu of dower or other distributive share of my estate to which by law she would otherwise be entitled.
“Thirteenth. Pending the administration of my estate, the foregoing bequests shall be paid by my executors, and thereafter they shall be paid by my trustees; Provided, however, only the net income and profits from my property shall be available to pay the bequests mentioned in the Seventh, Tenth, Eleventh and Twelfth paragraphs hereof. Should such income and profits be insufficient at any time to pay the bequests mentioned in said paragraph in full, eách of said bequests shall bear a proportionate part, of such deficiency. A deficiency arising during any year may be made up out of the income and profits for any succeeding year-or years.”
The widow elected, as she must do to deprive her of her right in the estate, to take under the will the $50,000 per annum, and relinquish to the estate her interest therein. On these annual payments of $50,000 there was charged and collected by the government income taxes for different years aggregating $24,874.40. Deeming the collection of these amounts from the source stated not taxable under the law, a claim for refund was made and denied,- and this action instituted by her to recover the same.
To the petition of plaintiff the collector of internal revenue interposed a demurrer, which was overruled and denied, and thereafter, the collector electing to stand on his demurrer and not plead further, judgment was entered for plaintiff for the amounts theretofore paid as income on the payments made, and the collector brings error.
From the foregoing statement it is apparent the question of merit presented for decision is this: In case a widow, under the laws of the state of Nebraska, elects to accept annual payments or installments of money as provided in the will of her husband in lieu of that interest in his estate fixed by the laws of the state, are such annual payments taxable income to her until the aggregate of such payments shall equal or exceed her interest in the estate as by the statutory law of the state provided?
In this case the value of her interest in the estate was well pleaded, and admitted by the demurrer to be $483,737.79. To this sum, out of her husband’s estate, the widow was absolutely entitled under the law of that state. As it was her individual property on her husband’s decease, and as by his last will and testament he proposed to her the payment of $50,000.00 per annum out of the estate in lieu of her absolute statutory interest, which she was entirely free to accept or reject, and as she decided to and did elect to take the offer made her by the will of her deceased husband, it is quite too clear for argument she was a purchaser for value of the annuities or yearly payments of $50,000 each, and to this end come many adjudicated cases. Lord v. Lord, 23 Conn. 327; Security Co. v. Bryant, 52 Conn. 311, 52 Am. Rep. 599; Green v. Saulsbury; 6 Del. Ch. 371, 33 A. 623; Moore v. Alden, 80 Me. 301, 14 A. 199, 6 Am. St. Rep. 203; Pollard v. Pollard, 1 Allen (83 Mass.) 490; In re Gotzian, 34 Minn. 159, 24 N. W. 920, 57 Am. Rep. 43; Bank of Commerce v. Chambers, 96 Mo. 459, 10 S. W. 38; ReQua v. Graham, 187 Ill. 67, 58 N. E. 357, 52 L. R. A. 641; Schaffenacker v. Beil, 320 Ill. 31, 150 N. E. 333; In re Estate of Strahan, 93 Neb. 828, 142 N. W. 678; In re Estate of Sanford, 91 Neb. 752, 137 N. W. 864, 45 L. R. A. (N. S.) 236; Borden v. Jenks, 140 Mass. 562, 5 N. E. 623, 54 Am. Rep. 507, and a wealth of other eases.
The taxes in question were collected on the annual payments, or $50,000, made to plaintiff for the years 1920 to 1924, both inclusive. Therefore the income tax laws involved are those of 1918, 1921, and 1924 (40 Stat. 1057, §§ 200-261; 42 Stat. 227, §§ 200-263; 43 Stat. 253, §§ 200-283).
It is freely conceded, if the widow had taken the amount of her interest in- the estate, and with that sum had purchased an annuity of $50,000.00 per annum for a period of years, such annuities, when paid to her, would not have been taxable to her under the law, for the laws above referred to so provide. In legal effect, is that not precisely what was done in this ease? She took her property by her acquired under the laws of the state, turned the same over to her husband’s estate under an agreement she should receive as the purchase price of hér interest $50,000.00 per annum from the estate; that is to say, her invested capital was the value of her interest in her husband’s estate, to wit, $483,727.79. By the expenditure of this sum, the same being her own money, she purchased an annuity of $50,000 per annum from those representing her husband’s estate to be paid out of that estate. Clearly, in Such case, under the law, she should not be required to pay any income tax on 'the annual payments received until her capital invested in the annuities shall have been returned to her. After that time, it is conceded, she should pay tax. To this conclusion come the adjudicated cases in which the facte are identical or similar to the facte of this ease. See Warner v. Walsh, 15 F. (2d) 367, from the Circuit Court of Appeals for the Second Circuit; Bolster, Executor, v. United States, District Court Mass. Nov. 21, 1927, affirmed by Circuit Court of Appeals for the Eirst Circuit under title United States v. Bolster, Executor, 26 F. (2d) 760, decided June 13, 1928. It is insisted by the government this case is similar in its facte to that of Irwin v. Gavit, 268 U. S. 161, 45 S. Ct. 475, 69 L. Ed. 897. But, as will be seen by a reading and consideration of the ease above cited, the facte of that case and the instant ease are clearly and readily distinguishable from this and all like cases.
We are of the opinion the judgments in these cases are right and must be affirmed.

Question: This question concerns the first listed appellant. The nature of this litigant falls into the category "federal government (including DC)". Which category of federal government agencies and activities best describes this litigant?

Choices:
cabinet level department
courts or legislative
agency whose first word is "federal"
other agency, beginning with "A" thru "E"
other agency, beginning with "F" thru "N"
other agency, beginning with "O" thru "R"
other agency, beginning with "S" thru "Z"
Distric of Columbia
other, not listed, not able to classify

Answer: 4