Input: Read this: In 2009, the Internet Archive migrated its customized storage architecture to Sun Open Storage, and hosts a new data center in a Sun Modular Datacenter on Sun Microsystems' California campus.
Question: When did Internet Archive chance its platform for California?

Output: unanswerable


Input: Read this: In 1943, at the age of 16, Elizabeth undertook her first solo public appearance on a visit to the Grenadier Guards, of which she had been appointed colonel the previous year. As she approached her 18th birthday, parliament changed the law so that she could act as one of five Counsellors of State in the event of her father's incapacity or absence abroad, such as his visit to Italy in July 1944. In February 1945, she joined the Women's Auxiliary Territorial Service as an honorary second subaltern with the service number of 230873. She trained as a driver and mechanic and was promoted to honorary junior commander five months later.
Question: Where did Elizabeth visit on her first solo public appearance?

Output: Grenadier Guards


Input: Read this: In 1348 and 1349 Portugal, like the rest of Europe, was devastated by the Black Death. In 1373, Portugal made an alliance with England, which is the longest-standing alliance in the world. This alliance served both nations' interests throughout history and is regarded by many as the predecessor to NATO. Over time this went way beyond geo-political and military cooperation (protecting both nations' interests in Africa, the Americas and Asia against French, Spanish and Dutch rivals) and maintained strong trade and cultural ties between the two old European allies. Particularly in the Oporto region, there is visible English influence to this day.
Question: The Portugal-English alliance served as the predecessor to what?

Output: NATO


Input: Read this: The Umayyad Caliphate (Arabic: الخلافة الأموية‎, trans. Al-Khilāfat al-ʾumawiyya) was the second of the four major Islamic caliphates established after the death of Muhammad. This caliphate was centered on the Umayyad dynasty (Arabic: الأمويون‎, al-ʾUmawiyyūn, or بنو أمية, Banū ʾUmayya, "Sons of Umayya"), hailing from Mecca. The Umayyad family had first come to power under the third caliph, Uthman ibn Affan (r. 644–656), but the Umayyad regime was founded by Muawiya ibn Abi Sufyan, long-time governor of Syria, after the end of the First Muslim Civil War in 661 CE/41 AH. Syria remained the Umayyads' main power base thereafter, and Damascus was their capital. The Umayyads continued the Muslim conquests, incorporating the Caucasus, Transoxiana, Sindh, the Maghreb and the Iberian Peninsula (Al-Andalus) into the Muslim world. At its greatest extent, the Umayyad Caliphate covered 15 million km2 (5.79 million square miles), making it the largest empire (in terms of area - not in terms of population) the world had yet seen, and the fifth largest ever to exist.
Question: When did the First Muslim Civil War begin?

Output:
unanswerable