In this task, you're given passages that contain mentions of names of people, places, or things. Some of these mentions refer to the same person, place, or thing. Your job is to write questions that evaluate one's understanding of such references. Good questions are expected to link pronouns (she, her, him, his, their, etc.) or other mentions to people, places, or things to which they may refer. Do not ask questions that can be answered correctly without understanding the paragraph or having multiple answers. Avoid questions that do not link phrases referring to the same entity. For each of your questions, the answer should be one or more phrases in the paragraph, and it should be unambiguous.
Example: Passage: Nearing London, Oliver encounters Jack Dawkins, a pickpocket more commonly known by the nickname the "Artful Dodger", and his sidekick, a boy of a humorous nature named Charley Bates, but Oliver's innocent and trusting nature fails to see any dishonesty in their actions. The Dodger provides Oliver with a free meal and tells him of a gentleman in London who will "give him lodgings for nothing, and never ask for change". Grateful for the unexpected assistance, Oliver follows the Dodger to the "old gentleman's" residence. In this way Oliver unwittingly falls in with an infamous Jewish criminal known as Fagin, the gentleman of whom the Artful Dodger spoke. Ensnared, Oliver lives with Fagin and his gang of juvenile pickpockets in their lair at Saffron Hill for some time, unaware of their criminal occupations. He believes they make wallets and handkerchiefs.
Example solution: Who believes Fagin's gang make wallets and handkerchiefs?.
Example explanation: This question is based on the following sentence in the passage "He believes they make wallets and handkerchiefs". It evaluates the understanding that the pronoun "he" refers to name "Oliver". You can ask questions like this one about most pronouns in a paragraph.

Problem: Passage: In June 2006, talks concerning a territorial dispute over the Bakassi peninsula were resolved. The talks involved President Paul Biya of Cameroon, then President Olusegun Obasanjo of Nigeria and then UN Secretary General Kofi Annan, and resulted in Cameroonian control of the oil-rich peninsula. The northern portion of the territory was formally handed over to the Cameroonian government in August 2006, and the remainder of the peninsula was left to Cameroon 2 years later, in 2008. The boundary change was met with a local insurgency, as some Bakassians preferred to remain Nigerian. Most militants laid down their arms in November 2009.In February 2008, Cameroon experienced its worst violence in 15 years when a transport union strike in Douala escalated into violent protests in 31 municipal areas.In May 2014, in the wake of the Chibok schoolgirl kidnapping, presidents Paul Biya of Cameroon and Idriss Déby of Chad announced they are waging war on Boko Haram, and deployed troops to the Nigerian border.Since November 2016, protesters from the predominantly English-speaking Northwest and Southwest regions of the country have been campaigning for continued use of the English language in schools and courts. People were killed and hundreds jailed as a result of these protests. In 2017, Biya's government blocked the regions' access to the Internet for three months. In September, separatists started a guerilla war for the indendence of the Anglophone region as the Federal Republic of Ambazonia. The government responded with a military offensive, and the insurgency spread across the Northwest and Southwest regions. As of 2019, fighting between separatist guerillas and government forces continues. The conflict indirectly led to an upsurge in Boko Haram activities, as the Cameroonian military largely withdrew from the north to focus on fighting the Ambazonian separatists.
Solution: What were the full names of the people who were involved in the talks concerning a territorial dispute over the Bakassi peninsula?