With regard to the application of the provisions of the following Ministerial Ordinances as amended by this Ministerial Ordinance in the case where a person is detained in a penal institution (including, in the case where a sentence is executed in a juvenile training school pursuant to the provisions of Article 56, paragraph (3) of the Juvenile Act (Act No. 168 of 1948), that juvenile training school) for the execution of a sentence of imprisonment with work, imprisonment without work, or penal detention prescribed in Article 16 of the Penal Code (Act No. 45 of 1907) prior to the amendment by the provisions of Article 2 of the Act Partially Amending the Penal Code and Other Acts (hereinafter referred to as "former penal detention" in this Article) imposed for an act committed before this Ministerial Ordinance comes into effect, or in the case where a person is detained in a detention facility and undergoing the execution of a sentence of imprisonment with work, imprisonment without work, or former penal detention, the person is deemed to be detained in a penal institution for the execution of a sentence of imprisonment or penal detention, or to be detained in a detention facility and undergoing the execution of a sentence of imprisonment or penal detention.