Task: Explanation
Input (English): Alcatraz Island ( ) is located in San Francisco Bay, 1.25 mi offshore from San Francisco, California, United States. The small island was developed with facilities for a lighthouse, a military fortification, a military prison (1868), and a federal prison from 1934 until 1963. Beginning in November 1969, the island was occupied for more than 19 months by a group of Native Americans from San Francisco, who were part of a wave of Native activism across the nation, with public protests through the 1970s. In 1972, Alcatraz became part of a national recreation area and received designation as a National Historic Landmark in 1986. Question:  The San Francisco Fire Department provides services to a small island that was used as a what from 1934 until 1963? Answer: federal prison
Output (English):  The small island was developed with facilities for a lighthouse, a military fortification, a military prison 1868, and a federal prison from 1934 until 1963.