This task involves annotating the answer type to a given question that involve some kind of complex reasoning (including numerical reasoning). Note that the questions require looking at more than one part of the passage to answer. There are 3 possible answer types (i) spans, (ii) numbers and (iii) dates. If the answer can be found in the passage, label it as "span". If the answer is a number, label as "number". Similarly, label "date" if you think the answer to the given question is a date.

Example Input: Passage: The Confederation-controlled Ava was next. Bayinnaung made extensive preparations, assembling a large invasion force . In December 1554, the Toungoo land and naval forces invaded. Within a month, the invasion forces held complete command of the river and the country. On 22 January 1555, the southern forces took the city. Bayinnaung then planned to follow up to the Confederation's home states to prevent future Shan raids into Upper Burma. With the entire Irrawaddy valley under his control, he was able to raise a large army of 24,000 men, 1200 horses and 60 elephants, and invaded the Shan states in January 1557. The massive show of force worked. Shan states one after another submitted with minimal resistance. By March 1557, Bayinnaung in one stroke controlled all cis-Salween  Shan states from the Patkai range at the Assamese border in the northwest to Mohnyin , Mogaung  in present-day Kachin State to Momeik  Thibaw , and Mone  in the east.
Question: On what date did the invasion of Ava end?
Example Output: date

Example Input: Passage: The 2010 maternal mortality rate per 100,000 births for Guinea Bissau was 1000. This compares with 804.3 in 2008 and 966 in 1990. The under-5 mortality rate, per 1,000 births, was 195 and the neonatal mortality as a percentage of under-5 mortality was 24. The number of midwives per 1,000 live births was 3; one out of eighteen pregnant women die as a result of pregnancy. According to a 2013 UNICEF report, 50% of women in Guinea Bissau had undergone female genital mutilation. In 2010, Guinea Bissau had the seventh-highest maternal mortality rate in the world.
Question: Which year had the lowest maternal mortality rate?
Example Output: date

Example Input: Passage: Main article: Kazan rebellion of 1552-56. 18,000 men were left as a garrison and Ivan returned to Moscow to celebrate. After the fall of Kazan resistance continued in the countryside. The tribes refused to pay taxes. Russian merchants were killed which led to reprisals. The forts of Çalım and Mişätamaq and were built on the west and east sides of the Volga. The Nogai Ali Akram was brought in as khan. Soltikov marched against Mişätamaq but he and 500 men were surrounded in the snow and killed. Ivan sent a larger force. There were daily combats in the snow and forests. Ten thousand men were killed, six thousand were captured along with fifteen thousand women and children. 1600 leading Tatars were put to death.The leaders Yepancha and Aleka were killed.  Ali Akram proved incompetent and was killed by Mameshbirde. Mameshbirde was betrayed to the Russians. The fort of Mişätamaq fell at some point. After the fall of Çalım in 1556 most resistance came to an end. In 1556 the Russians went down the Volga and conquered the Khanate of Astrakhan. In 1558 Anikey Stroganov was granted large lands on the Kama River northeast of Kazan, which he worked to develop. In 1582 the Stroganovs were involved in the conquest of the Khanate of Sibir east of the Urals. The Kazan Tatars continued to live in the area and retained their language and religion.
Question: What was the latter year of Kazan's rebellion?
Example Output:
date