Given the task definition, example input & output, solve the new input case.
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.
Output: Who believes Fagin's gang make wallets and handkerchiefs?.
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 case for you: Passage: In late 1833 Etty was commissioned by Williams-Wynn to paint a portrait of two of his seven children. Preparing for a Fancy Dress Ball depicts Williams-Wynn's daughters Charlotte and Mary, dressing up in lavish Italian-style costume. Although their dress is generally described as Italian, Dennis Farr's 1958 biography of Etty speculates that elements of the costumes were possibly intended to be Russian, based on Charlotte's headdress. The Italian-style clothing likely represents the high level of interest in Italian culture in early 19th-century England. The popularity of the style of music now known as bel canto, widely associated with Italy, was at its peak; likewise, the Italian plays of William Shakespeare had become extremely popular in the period. Etty, who had spent a good deal of time in Venice and other Italian cities, would have been very familiar with Italian clothing designs, and the costumes worn by the Williams-Wynn sisters closely resemble those of women in Venetian scenes painted by Etty, such as 1831's Window in Venice, During a Fiesta. As art historian Leonard Robinson points out, despite the title the sisters are not in fact shown preparing for the ball, but are fully dressed. The style of the work reflects that of Thomas Lawrence, who had been Etty's teacher in 1807–08, as well as that of Joshua Reynolds, of whom Etty was a great admirer and of whose works Etty had often made copies as an exercise.
Output:
What is the last name of the person who was to paint a portrait of children?