Questão de Língua Inglesa

Analyze the following statements about the text. I. In “a museum in Sicily” (l. 01-02), the indefinite article “a” introduces a singular countable noun that has not been previously identified. II. In “the Regional Interdisciplinary Museum of Messina” (l. 04-05), the definite article “the” refers to a specific institution. III. In “the paintings taken” (l. 13), the definite article “the” is used because the paintings had already been mentioned in the text. Which ones are correct?