Information:  - A Company is a legal entity made up of an association of persons, be they natural, legal, or a mixture of both, for carrying on a commercial or industrial enterprise. Company members share a common purpose and unite in order to focus their various talents and organize their collectively available skills or resources to achieve specific, declared goals. Companies take various forms such as:  - A corporation is a company or group of people authorized to act as a single entity (legally a person) and recognized as such in law. Early incorporated entities were established by charter (i.e. by an "ad hoc" act granted by a monarch or passed by a parliament or legislature). Most jurisdictions now allow the creation of new corporations through registration.  - An organization or organisation (see spelling differences) is an entity comprising multiple people, such as an institution or an association, that has a collective goal and is linked to an external environment.  - A chief executive officer (CEO) describes the position of the most senior corporate officer, executive, leader or administrator in charge of managing an organization. CEOs lead a range of organizations, including public and private corporations, non-profit organizations and even some government organizations (e.g., Crown corporations). The CEO of a corporation or company typically reports to the board of directors and is charged with maximizing the value of the entity, which may include maximizing the share price, market share, revenues, or another element. In the non-profit and government sector, CEOs typically aim at achieving outcomes related to the organization's mission, such as reducing poverty, increasing literacy, etc. Titles also often given to the holder of CEO position include president, chief executive (CE) and managing director (MD).  - The Secretary of the Navy ( or SECNAV ) is a statutory office ( 10 U.S.C. § 5013 ) and the head ( chief executive officer ) of the Department of the Navy , a military department ( component organization ) within the Department of Defense of the United States of America . The Secretary of the Navy must by law be a civilian , at least 5 years removed from active military service , and is appointed by the President and requires confirmation by a majority vote of the Senate . The Secretary of the Navy was , from its creation in 1798 , a member of the President 's Cabinet until 1949 , when the Secretary of the Navy ( and the Secretaries of the Army and Air Force ) was by amendments to the National Security Act of 1947 made subordinate to the Secretary of Defense .  - A board of directors is a body of elected or appointed members who jointly oversee the activities of a company or organization, which can include a non-profit organization or a government agency or corporation. A board of directors' activities are determined by the powers, duties, and responsibilities delegated to it or conferred on it by an authority outside itself. These matters are typically detailed in the organization's constitution and bylaws. These documents commonly also specify the number of members of the board, how they are to be chosen, and how often they are to meet. However, the constitution and bylaws rarely address a board's powers when faced with a corporate turnaround, restructuring, or emergencies, where board members need to act as agents of change in addition to their traditional fiduciary responsibilities.    Given the information, choose the subject and object entities that have the relation of 'instance of'.
A:
united states secretary of the navy , position