Information: - Colloquially, forum shopping is the practice adopted by some litigants of having their legal case heard in the court thought most likely to provide a favorable judgment. Some jurisdictions have, for example, become known as "plaintiff-friendly" and so have attracted litigation even when there is little or no connection between the legal issues and the jurisdiction in which they are to be litigated. - A court is a tribunal, often as a government institution, with the authority to adjudicate legal disputes between parties and carry out the administration of justice in civil, criminal, and administrative matters in accordance with the rule of law. In both common law and civil law legal systems, courts are the central means for dispute resolution, and it is generally understood that all persons have an ability to bring their claims before a court. Similarly, the rights of those accused of a crime include the right to present a defense before a court. - Jurisdiction (from the Latin "ius, " meaning "law" and "" meaning "to speak") is the practical authority granted to a legal body to administer justice within a defined area of responsibility, e.g., Michigan tax law. In the federations like USA, areas of jurisdiction apply to local, state, and federal levels; e.g. the court has jurisdiction to apply federal law. - Exxon Mobil Corp. v. Saudi Basic Industries Corp. , 544 U.S. 280 ( 2005 ) , is a United States Supreme Court case in which the Court clarified the Rooker - Feldman doctrine and its relation to preclusion and concurrent jurisdiction . - Concurrent jurisdiction exists where two or more courts from different systems simultaneously have jurisdiction over a specific case. This situation leads to forum shopping, as parties will try to have their civil or criminal case heard in the court that they perceive will be most favorable to them. Given the paragraphs above, decide what entity has the relation 'instance of' with 'legal case'.
Answer:
exxon mobil corp. v. saudi basic industries corp.