instruction:
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.
question:
Passage: Although Satsunan literally means the south of Satsuma Province, the north-eastern group of the Osumi Islands formed Tane Province for a brief period in the 8th and 9th centuries and then were merged into Osumi Province. The Tokara Islands and the northwestern group of the Osumi Islands belonged to Kawanabe District of Satsuma Province. The Amami Islands paid tribute to the Ryukyu Kingdom to the South until they were put under direct control in the late 16th century, but were conquered in 1609 by the Satsuma Domain. In 1879, the Amami Islands became Oshima District of Kagoshima Prefecture. The Tokara Islands and the north-western group of the Osumi Islands were transferred to Oshima District in 1897, and then to Kagoshima District in 1973. After World War II, the Tokara and Amami Islands were put under United States military occupation, which formed the Government of the Northern Ryukyus. The Japanese government fiercely contested the Amami Islands being affiliated with the word "Ryukyu", believing that it would lead to a later return of the islands to their control. The Tokara Islands were returned to Japan in 1952, which were followed by the Amami Islands in December 1953.
Question: Which island was returned to Japan last?
answer:
span

question:
Passage: Coming off of their dominant home win over the Steelers, the Ravens flew to Paul Brown Stadium for an AFC North rematch with the Cincinnati Bengals, trying to win the division and a playoff berth on this Thursday Night fight. After a scoreless first quarter, the Ravens trailed early as Bengals kicker Shayne Graham kicked a 23-yard and a 27-yard field goal. In the third quarter, things went from bad to worse for Baltimore as QB Carson Palmer completed a 40-yard flea-flicker TD pass to WR T. J. Houshmandzadeh for the only score of the period. In the fourth quarter, the Ravens valiantly tried to fight back, as QB Steve McNair completed a 36-yard TD pass to WR Derrick Mason. However, a failed onside kick spelled Baltimore's doom. With the loss, the Ravens fell to 9-3.
Question: How many wins did the Ravens have after this game?
answer:
number

question:
Passage: Thailand is the worlds third largest producer of crude palm oil, producing approximately two million tonnes per year, or 1.2 percent of global output. Ninety-five percent of Thai production is consumed locally. Almost 85 percent of palm plantations and extraction mills are in south Thailand. At year-end 2016, 4.7 to 5.8 million Rai (unit) were planted in oil palms, employing 300,000 farmers, mostly on small landholdings of 20 rai. ASEAN as a region accounts for 52.5 million tonnes of palm oil production, about 85 percent of the world total and more than 90 percent of global exports. Indonesia accounts for 52.2 percent of world exports. Malaysian exports total 37.9 percent. The biggest consumers of palm oil are India, the European Union, and China, with the three consuming nearly 50 percent of world exports. Thailands Department of Internal Trade (DIT) usually sets the price of crude palm oil and refined palm oil. Thai farmers have a relatively low yield compared to those in Malaysia and Indonesia. Thai palm oil crops yield 4-17 percent oil compared to around 20 percent in competing countries. In addition, Indonesian and Malaysian oil palm plantations are 10 times the size of Thai plantations.
Question: Which region had the lowest yield: Thai, Malaysia or Indonesia?
answer:
span