 Many important questions in social ontology are connected to jurisprudence, or the study of the nature of law itself. Consider a given legal obligation or prohibition in a locality, such as a U.S. federal law on reporting requirements for public corporations, or a state law governing medical reimbursements. Lawyers and judges mainly work on specific applications of such laws, such as whether a particular corporation satisfying a particular reporting requirement. In certain circumstances lawyers and judges investigate and interpret the content of the law, such as whether some provision is incompatible with the Constitution.