Input: Read this: Starting in 2006, Apple's industrial design shifted to favor aluminum, which was used in the construction of the first MacBook Pro. Glass was added in 2008 with the introduction of the unibody MacBook Pro. These materials are billed as environmentally friendly. The iMac, MacBook Pro, MacBook Air, and Mac Mini lines currently all use aluminum enclosures, and are now made of a single unibody. Chief designer Jonathan Ive continues to guide products towards a minimalist and simple feel, including eliminating of replaceable batteries in notebooks. Multi-touch gestures from the iPhone's interface have been applied to the Mac line in the form of touch pads on notebooks and the Magic Mouse and Magic Trackpad for desktops.
Question: Which Mac used tin in it's construction?

Output: unanswerable

Input: Read this: South Slavic dialects historically formed a continuum. The turbulent history of the area, particularly due to expansion of the Ottoman Empire, resulted in a patchwork of dialectal and religious differences. Due to population migrations, Shtokavian became the most widespread in the western Balkans, intruding westwards into the area previously occupied by Chakavian and Kajkavian (which further blend into Slovenian in the northwest). Bosniaks, Croats and Serbs differ in religion and were historically often part of different cultural circles, although a large part of the nations have lived side by side under foreign overlords. During that period, the language was referred to under a variety of names, such as "Slavic", "Illyrian", or according to region, "Bosnian", "Serbian" and "Croatian", the latter often in combination with "Slavonian" or "Dalmatian".
Question: What were some of the names given to language during period of foreign control?

Output: "Slavic", "Illyrian", or according to region, "Bosnian", "Serbian" and "Croatian"

Input: Read this: While Harkness' original colleges were Georgian Revival or Collegiate Gothic in style, two colleges constructed in the 1960s, Morse and Ezra Stiles Colleges, have modernist designs. All twelve college quadrangles are organized around a courtyard, and each has a dining hall, courtyard, library, common room, and a range of student facilities. The twelve colleges are named for important alumni or significant places in university history. In 2017, the university expects to open two new colleges near Science Hill.
Question: In what year does the university expect to close two more colleges?

Output: unanswerable

Input: Read this: The different dialects show many sound shifts in different vowels (even shifting between diphthongs and monophthongs), and in some cases consonants also shift pronunciation. For example, an oddity of West Flemings (and to a lesser extent, East Flemings) is that, the voiced velar fricative (written as "g" in Dutch) shifts to a voiced glottal fricative (written as "h" in Dutch), while the letter "h" in West Flemish becomes mute (just like in French). As a result, when West Flemish try to talk Standard Dutch, they're often unable to pronounce the g-sound, and pronounce it similar to the h-sound. This leaves f.e. no difference between "held" (hero) and "geld" (money). Or in some cases, they are aware of the problem, and hyper-correct the "h" into a voiced velar fricative or g-sound, again leaving no difference.
Question: If a West Fleming speaker were being extra careful to avoid the silent "h," they might over-correct into what sound?

Output:
g-sound