opinion: UNITED STATES ex rel. LANG BODY CO. OF DELAWARE v. BOARD OF TAX APPEALS et al.
  Court of Appeals of District of Columbia.
  Submitted October 8, 1928.
  Decided October 20, 1928.
  No. 1440.
  James H. Sykes, of Washington, D. C., for petitioner.
  PER CURIAM.
  The relator’s petition seeks the issuance of a writ of prohibition to restrain the Board of Tax Appeals from taking certain official action, and the immediate question is whether a rule to show cause shall issue to the respondents. The rule is denied upon the ground that it appears from the averments of the petition that the issue thereby raised can best be presented by appeal to an appellate court; it being the approved practice that prohibition will not issue where there is an adequate remedy by court appeal. United States ex rel. Morris v. Scott, 25 App. D. C. 88; United States ex rel., Holmead v. Barnard, 29 App. D. C. 431.
  The petition is accordingly dismissed, with costs.
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