Question: The organization that mediated the truce which ended the Iran-Iraq War recognises how many regions in the continent Efim Zelmanov was born?

<P0-S0> Efim Isaakovich Zelmanov (; born 7 September 1955 in Khabarovsk) is a Russian-American mathematician, known for his work on combinatorial problems in nonassociative algebra and group theory, including his solution of the restricted Burnside problem. <P0-S1> He was awarded a Fields Medal at the International Congress of Mathematicians in Zürich in 1994. <SEP> <P1-S0> the reconquista of portugal and spain led to a series of oceanic explorations resulting in the age of discovery that established direct links with africa, the americas, and asia, while religious wars continued to be fought in europe, which ended in 1648 with the peace of westphalia. <P1-S1> the spanish crown maintained its hegemony in europe and was the leading power on the continent until the signing of the treaty of the pyrenees, which ended a conflict between spain and france that had begun during the thirty years' war. <P1-S2> an unprecedented series of major wars and political revolutions took place around europe and indeed the world in the period between 1610 and 1700. observers at the time, and many historians since, have argued that wars caused the revolutions. <P1-S3> galileo galilei, invented the telescope and the thermometer which allowed him to observe and describe the solar system. <P1-S4> leonardo da vinci painted the most famous work in the world. <P1-S5> guglielmo marconi invented the radio. <SEP> <P2-S0> Khabarovsk is served by the Khabarovsk Novy Airport with international flights to East Asia, Southeast Asia, European Russia, and Central Asia. <SEP> <P3-S0> the karabakh war ended after a russian-brokered cease-fire was put in place in 1994. the war was a success for the karabakh armenian forces who managed to capture 16% of azerbaijan's internationally recognised territory including nagorno-karabakh itself. <P3-S1> since then, armenia and azerbaijan have held peace talks, mediated by the organisation for security and co-operation in europe (osce). <P3-S2> the status of karabakh has yet to be determined. <P3-S3> the economies of both countries have been hurt in the absence of a complete resolution and armenia's borders with turkey and azerbaijan remain closed. <P3-S4> by the time both azerbaijan and armenia had finally agreed to a ceasefire in 1994, an estimated 30,000 people had been killed and over a million had been displaced. <SEP> <P4-S0> the African Group, with 54 member states the Asia - Pacific Group, with 53 member states the Eastern European Group, with 23 member states the Latin American and Caribbean Group (GRULAC), with 33 member states the Western European and Others Group (WEOG), with 28 member states, plus 1 member state (the United States) as an observer state. <SEP> <P5-S0> On September 22, 1980, the Iraqi army invaded the Iranian Khuzestan, and the Iran–Iraq War began. <P5-S1> Although the forces of Saddam Hussein made several early advances, by mid 1982, the Iranian forces successfully managed to drive the Iraqi army back into Iraq. <P5-S2> In July 1982, with Iraq thrown on the defensive, Iran took the decision to invade Iraq and conducted countless offensives in a bid to conquer Iraqi territory and capture cities, such as Basra. <P5-S3> The war continued until 1988, when the Iraqi army defeated the Iranian forces inside Iraq and pushed the remaining Iranian troops back across the border. <P5-S4> Subsequently, Khomeini accepted a truce mediated by the UN. <P5-S5> The total Iranian casualties in the war were estimated to be 123,220–160,000 KIA, 60,711 MIA, and 11,000–16,000 civilians killed.