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: Albrecht the Elder was 62 or 63  when his panel was painted early in 1490. Barbara's portrait may have been completed soon after, when she would have been around 39. Their son was around 18 and had just completed his apprenticeship with Michael Wolgemut, and would soon leave for Nuremberg to travel as a journeyman painter. The father panel was painted first; for aesthetic reasons Dürer may have waited a year or two until his mother looked older.The sitters are presented in three-quarter view before flat, nondescript lacquer-like green backgrounds, which although lushly coloured, are thinly layered. Each has a white ground and light red imprimatura with lead content. The sitter's form and pose echo and in many ways counterbalance each other. Brand Philip draws attention to the similarities of the panels' linear construction, especially the manner in which the folds and lines of their clothing form triangular shapes. The train of Barbara's headdress across her chest corresponds with the opening of Albrecht's fur-lined coat. It was more usual in pendant portraits of this type for the male to be on the left-hand side; the positioning here may be an indication that Dürer originally intended his father's panel to stand alone, given that Barbara's was painted some time later.Albrecht the Elder's panel is regarded as the superior of the two works. This may in part be attributed to differing contemporary treatments of male and female portraits; men were allowed more individuality, while female portraits were bound by stereotypes and were not as daring, for example showing evidence of ageing. In either case, the father painting is far more closely detailed, especially in the lining of clothing, which is summary in Barbara's panel, compared to the long seam of her husband's gown. This contrast in detail can also be seen in the treatment of the rosaries, which are given prominence and a glowing red colour in his panel, but are small and relegated in hers.Albrecht the Elder's panel is usually, but not always, thought to be the first of the two to be executed and, if so, is the earliest extant example of his son's painting. In contrast, a number of art historians have noted that his mother's portrait contains bland passages, especially around the eyes and may be a near-contemporary copy of a lost original. Lotte Brand Philip believes the clumsiness in the mother panel indicated that Dürer painted it first, as a youthful attempt at portraiture, and that Albrecht the Elder might have later "commissioned" his own portrait to pair with Barbara's. Recent technical examination of the two panels confirms that Barbara's portrait was painted later than her husband's.
What is the name of the person that completed his apprenticeship with Michael Wolgemut?

Passage: The Annunciation draws heavily on van der Weyden's 1430s Louvre Annunciation, his c. 1455  Saint Columba altarpiece, and the Clugny Annunciation (c. 1465–75), which is attributed to either van der Weyden or Memling. Memling almost certainly was apprenticed to van der Weyden in Brussels until setting up his own workshop in Bruges sometime after 1465. Memling's Annunciation is more innovative, with motifs such as the attendant angels that were absent in the earlier paintings. According to Till-Holger Borchert, not only was Memling familiar with van der Weyden's motifs and compositions, but he might have assisted with the underdrawing in van der Weyden's workshop. The shutters on the right are copied from the Louvre panel, the knotted curtain appears in the Columba triptych's "Annunciation".A sense of movement is conveyed throughout. The trailing edges of Gabriel's garment fall outside the pictorial space, indicating his arrival. The Virgin's "serpentine" pose, with attendant angels supporting her, adds to the sense of flow. Memling's use of color achieves a startling effect. The traditional rays of light are replaced with light color indicators; the white clothes rendered in "icy" blue, the angel to the right in yellow patches seems "bleached by light", the left-hand angel appears to be steeped in shadow, dressed in clothes of lavender and bearing deep green wings. The effect is iridescent, according to Blum, who writes, "this shimmering surface gives [the figures] an unearthly quality, separating them from the more believable world of the bedchamber." The effect deviates from the pure naturalism and realism which typifies Early Netherlandish art, causing a "startling" juxtaposition, an effect that is "unsteadying" and contradictory.
What is the name of the person who might have assisted with the underdrawing in Van der Weyden's workshop?

Passage: William H. Berry was elected in 1906, shortly after the dedication, to the office of State Treasurer on a reform "fusion ticket". Berry was the only Democrat elected to a statewide office from 1895 to 1934. His successful campaign was deemed by Governor Pennypacker to be "one of those freaks of ill fortune". Berry began investigating the costs of the capitol project and brought its $13 million pricetag to the attention of the public. Part of the reason for the discrepancy was Pennsylvania's "over-elaborate" and sometimes "unintelligible" method of "ordering and purchasing supplies, equipment [and] furnishings, commonly called the 'per-foot rule' ". Because the methods of measuring under the "per-foot rule" were not rigorously enforced, furnishing could be, intentionally, overpriced by the supplier. For example, a flagpole installed on the capitol roof was priced at $850; Berry estimated the value of the pole to have been only $150. Other expenses included $1,619 for a $125 bootblack stand and $3,257 for a $325 "mahogany case in the Senate barber shop".Pennypacker tried to demonstrate that costs associated with the capitol were reasonable in comparison with similar notable structures.  He pointed out that the United States Capitol cost $18 million, but had "fifty-five less [rooms] than the Capitol at Harrisburg." Pennypacker also showed how the New York State Capitol had cost $24 million, and was still unfinished. After an investigation, a total of five people, including Huston, were convicted, on December 18, 1908, and sentenced to two years in prison for "conspiring with State officials to defraud the State in the erection and furnishing of the Capitol." The Superintendent of Public Ground and Buildings James Shumaker and Auditor General William P. Snyder were also convicted. Among the convicted, John H. Sanderson and William L. Mathues died before going to prison.

What was the last name of the person who began investigating the costs of the capitol project?