opinion: PER CURIAM.
  Essentially this case involves the single question whether an accrual taxpayer which has received payments under subcontracts subject to renegotiation under goverment procurement statutes may set up as a reserve, and accordingly deduct from gross income, amounts which by as-sertedly and, we will assume, concededly, proper accounting methods it appeared during the taxable year would later have to be repaid. The Tax Court rejected taxpayer’s contention. 43 T.C. 182. We have little to add to its opinion. It does not help taxpayer for the court to find that these reserves were minimum amounts. It is the existence of any reserve, not the amount, which is in controversy. Taxpayer’s contracts with the prime contractor gave it a right to receive full payment, and no negotiations resulting in a readjustment of the contracts in question took place during the taxable year. The- fact that as to some of the contracts taxpayer made a specific offer in settlement of its obligation to renegotiate established nothing. Since the offers had not been accepted, they could be withdrawn. We agree with the Tax Court that there was nothing inherently improper in requiring taxpayer to wait and proceed under 26 U.S.C. §§ 1341 and 1482.
  Affirmed.
instruction: 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 "private business (including criminal enterprises)", specifically "unclear". Your task is to determine what subcategory of business best describes this litigant.
choices: auto industry chemical industry drug industry food industry oil & gas industry clothing & textile industry electronic industry alcohol and tobacco industry other unclear