12 An immovable property expropriation law shall specify the purpose of the expropriation and expressly prescribe a period of time for use of the immovable property. If the immovable property is not used to fulfill such purpose within such period of time or there is immovable property remaining from the use, and the original owner or his or her heir wishes to have such immovable property returned, it shall be returned to the original owner or his or her heir. The time period for requesting return of expropriated immovable property which has not been used, or of the remaining immovable property, to the original owner or his or her heir, as well as the return thereof and the reclaiming of the compensation paid, shall be as provided by law. The enactment of an immovable property expropriation law which specifically sets out immovable properties or owners of immovable property subject to the expropriation as necessary, shall not be deemed contrary to section 26 paragraph two. Section 38. A person shall enjoy the liberty of travel and the liberty of choosing his or her residence. The restriction of such liberties under paragraph one shall not be imposed except by virtue of a provision of law enacted for the purpose of security of the State, public order, public welfare or town and country planning, or for maintaining family status, or for welfare of a minor. Section 39. No person of Thai nationality shall be deported or prohibited from entering the Kingdom. The revocation of Thai nationality acquired by birth shall not be permitted. Section 40. A person shall enjoy the liberty to engage in an occupation. The restriction of such liberty under paragraph one shall not be imposed except by virtue of a provision of law enacted for the purpose of maintaining the security or economy of the country, protecting fair competition, preventing or eliminating barriers or monopoly, protecting consumers, regulating the engagement of occupation only to the extent of necessity, or for other public interest. Enactment of the law to regulate the engagement of occupation under paragraph two shall not be in a manner of discrimination or interference with the provision of education by educational institutions. Section 41. A person and a community shall have the right to: (1) be informed and have access to public data or information in the possession of a State agency as provided by law;