TASK DEFINITION: This task involves creating answers to complex questions, from a given passage. Answering these questions, typically involve understanding multiple sentences. Make sure that your answer has the same type as the "answer type" mentioned in input. The provided "answer type" can be of any of the following types: "span", "date", "number". A "span" answer is a continuous phrase taken directly from the passage or question. You can directly copy-paste the text from the passage or the question for span type answers. If you find multiple spans, please add them all as a comma separated list. Please restrict each span to five words. A "number" type answer can include a digit specifying an actual value. For "date" type answers, use DD MM YYYY format e.g. 11 Jan 1992. If full date is not available in the passage you can write partial date such as 1992 or Jan 1992. If you find multiple spans, please add them all as a comma separated list. Please restrict each span to five words.
PROBLEM: Passage: The exact origin of the 260-day count is not known, but there are several theories. One theory is that the calendar came from mathematical operations based on the numbers thirteen and twenty, which were important numbers to the Maya. The numbers multiplied together equal 260. Another theory is that the 260-day period came from the length of human pregnancy. This is close to the average number of days between the first missed menstrual period and birth, unlike Naegele's rule which is 40 weeks  between the last menstrual period and birth. It is postulated that midwives originally developed the calendar to predict babies' expected birth dates. A third theory comes from understanding of astronomy, geography and paleontology.  The mesoamerican calendar probably originated with the Olmecs, and a settlement existed at Izapa, in southeast Chiapas Mexico, before 1200 BCE. There, at a latitude of about 15° N, the Sun passes through zenith twice a year, and there are 260 days between zenithal passages, and gnomons , were found at this and other sites. The sacred almanac may well have been set in motion on August 13, 1359 BCE, in Izapa. 
Question: How many subjects comprise the third theory? 
Answer type: Number 

SOLUTION: 3.

PROBLEM: Passage: Many of the migrants from China in the 19th century came to work on the pepper and Uncaria gambir plantations, with 11,000 Chinese immigrants recorded in one year. Singapore became one of the entry and dispersal points for large number of Chinese and Indian migrants who came to work in the plantations and mines of the Straits Settlements, many of whom then settled in Singapore after their contract ended. By 1860, the total population had reached around 90,000, of these 50,000 were Chinese, and 2,445 Europeans and Eurasians. The first thorough census in Singapore was undertaken in 1871, and the people were grouped into 33 racial, ethnic or national categories, with Chinese forming the largest group at 57.6%. Censuses were then conducted at 10 year intervals afterwards. The 1881 census grouped the people into 6 main categories, and further subdivided into 47 sub-categories. The 6 broad groups were given as Europeans, Eurasians, Malays, Chinese, Indians and Others in 1921. The Malays group includes other natives of the Malay archipelago, the Europeans include Americans, the Indians would be people from the Indian subcontinent including what would now be Pakistan and Bangladesh. In 1901, the total population of Singapore was 228,555, with 15.8% Malays, 71.8% Chinese, 7.8% Indians, and 3.5% Europeans and Eurasians. The Chinese population figure of Singapore has stayed at over 70% of the total since, reaching 77.8% in 1947. After dropping from a peak of 60% in the early years of Singapore, the Malay population would range between 11 and 16% in the first half of the 20th century, while Indians hovered between 7 and just over 9% in the same period. 
Question: How many in percent in 1901 Singapore wasn't Chinese? 
Answer type: Number 

SOLUTION: 28.2.

PROBLEM: Passage: Elam was a pre-Iranic ancient civilization located to the east of Mesopotamia. In the Old Elamite period , Elam consisted of kingdoms on the Iranian Plateau, centered in Anshan, and from the mid-2nd millennium BC, it was centered in Susa in the Khuzestan lowlands. Its culture played a crucial role in the Gutian Empire and especially during the Iranic Achaemenid dynasty that succeeded it. The Oxus civilization was a Bronze Age Central Asian culture dated to c. 2300-1700 BC and centered on the upper Amu Darya . In the Early Bronze Age the culture of the Kopet Dag oases and Altyndepe developed a proto-urban society. This corresponds to level IV at Namazga-Tepe. Altyndepe was a major centre even then. Pottery was wheel-turned. Grapes were grown. The height of this urban development was reached in the Middle Bronze Age c. 2300 BC, corresponding to level V at Namazga-Depe. This Bronze Age culture is called the Bactria-Margiana Archaeological Complex . The Kulli culture, similar to those of the Indus Valley Civilisation, was located in southern Balochistan  c. 2500-2000 BC. Agriculture was the economical base of this people. At several places dams were found, providing evidence for a highly developed water management system. 
Question: How many years was the Kulli civilization located in southern Balochistan? 
Answer type: Number 

SOLUTION:
500.