This task is about writing a correct answer for the reading comprehension task. Based on the information provided in a given passage, you should identify the shortest continuous text span from the passage that serves as an answer to the given question. Avoid answers that are incorrect or provides incomplete justification for the question.

Passage: From the death of Augustus in AD 14 until after AD 70, Rome accepted as her Germanic frontier the water-boundary of the Rhine and upper Danube. Beyond these rivers she held only the fertile plain of Frankfurt, opposite the Roman border fortress of Moguntiacum (Mainz), the southernmost slopes of the Black Forest and a few scattered bridge-heads. The northern section of this frontier, where the Rhine is deep and broad, remained the Roman boundary until the empire fell. The southern part was different. The upper Rhine and upper Danube are easily crossed. The frontier which they form is inconveniently long, enclosing an acute-angled wedge of foreign territory between the modern Baden and Wurttemberg. The Germanic populations of these lands seem in Roman times to have been scanty, and Roman subjects from the modern Alsace-Lorraine had drifted across the river eastwards. Question: When did Augustus die?
AD 14

Passage: Philadelphia has more public art than any other American city. In 1872, the Association for Public Art (formerly the Fairmount Park Art Association) was created, the first private association in the United States dedicated to integrating public art and urban planning. In 1959, lobbying by the Artists Equity Association helped create the Percent for Art ordinance, the first for a U.S. city. The program, which has funded more than 200 pieces of public art, is administered by the Philadelphia Office of Arts and Culture, the city's art agency. Question: Which American city has the most public art?
Philadelphia

Passage: The island is subject to separate immigration controls from the remainder of Australia. Until recently immigration to Norfolk Island even by other Australian citizens was heavily restricted. In 2012, immigration controls were relaxed with the introduction of an Unrestricted Entry Permit for all Australian and New Zealand citizens upon arrival and the option to apply for residency; the only criteria are to pass a police check and be able to pay into the local health scheme. From 1 July 2016, the Australian migration system will replace the immigration arrangements currently maintained by the Norfolk Island Government. Question: When were the immigration protocols relaxed in Norfolk Island?
2012