You will be given a definition of a task first, then an example. Follow the example to solve a new instance of the task.
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.

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.
Solution: Who believes Fagin's gang make wallets and handkerchiefs?.
Why? 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.

New input: Passage: After resting at Arrhu, Melville's group moved out, aiming for the agreed rendezvous at Bulun. On September 19 they encountered native Tungus huntsmen, who led the party first to the tiny settlement of Little Borkhia, and then on to the larger village of Zemovialach. Here, locals advised them that they would have to wait for the river to freeze before attempting to reach Bulun.After several weeks, Melville learned from a Russian traveler that two Americans were recuperating at Bulun. Weather conditions were now suitable for travel, so Melville hired a pair of expert local dog drivers to take him to Bulun. He left Danenhower in charge, with instructions to lead the party to Bulun as soon as practicable, and from there to proceed as best he could to Yakutsk, a large city hundreds of miles to the south.Melville arrived in Bulun on November 3, where he found Nindemann and Noros, weak but recovering. From them, Melville learned of De Long's plight and his urgent need for rescue. The pair had endured a harrowing experience since leaving De Long nearly a month previously. They had struggled for ten days, sleeping in improvised shelters and eating what they could catch or shoot. In this fashion they reached a small, abandoned camp which they later learned was named Bulcour.
Here, they had been found by a nomadic band of Yakut hunters, who had taken them to a large camp at Kumakh-Surt. To their great frustration they were unable to make the Yakuts understand that they were shipwrecked mariners whose comrades were in dire straits. They did manage to convey their desire to reach Bulun, and were taken there by sled, arriving on October 29 a few days before Melville joined them there.
Solution:
What is the name of the party who locals advised to wait for the river to freeze before attempting to reach Bulun?