Detailed Instructions: In this task, you're given a passage, further information available on a particular linked term from the statement, and a question. Your job is to generate the answer to the question by using the information provided. If there is no clear answer obtainable, output 'none'.
Q: Passage: The old name forms of Waldbockelheim (now a neighbouring municipality), Schlobockelheim and Talbockelheim (now an outlying centre), can be traced back to an 824 document that names . The name Schlobockelheim first cropped up only in the 17th century. In the 19th century, the name Thalbockelheim first came to light. On 1 November 1910, municipal council agreed to introduce Schlobockelheim as the municipality's name. The name Talbockelheim seems to have had its spelling changed in line with the spelling reforms over the years; it is now written without the first H, but the name Schlobockelheim itself has not been changed in the wake of the German orthography reform of 1996; the has not been changed to SS. The three prefixes that serve to distinguish the three centres whose names are otherwise the same are all standard German words with well understood meanings: Wald ("forest"); Schlo (or Schloss in up-to-date spelling; "castle/palace"); Tal ("dale/valley"). The village chronicle has this to say about the village's name:Until the beginning of the last century (meant here is the 19th century) the village was named after the castle Schlobockelheim, which still existed in the 17th century. The castle was destroyed by the French in 1688. The village of Thalbockelheim consists of the two constituent centres of Thalbockelheim and Schlobockelheim: Schlobockelheim with the ruin of Castle Bockelheim lies on the mountainside and the constituent centre of Thalbockelheim lies 0.5km away down in the dale. Both constituent centres have roughly the same population figure. The village's name was changed in quite a peculiar way. In the early part of the last century, in response to an inquiry by the authorities as to what the village was called, because it consisted of two constituent centres, the name Thalbockelheim was given by the then Schoffe (roughly "lay jurist"). The Schoffe lived in the constituent centre of Thalbockelheim and a certain selfishness on his part made him want to call the village Thalbockelheim, without regard to the historical importance of the constituent centre of Schlobockelheim. None of the locally customary rural cadastral names had to do with the name Thalbockelheim, but rather they were named after Schlobockelheim, like Schlobockelheimer Muhlberg, Schlobockelheimer Felsenberg, Schlobockelheimer Kupfergrube and so on. Wines had earned quite an important reputation as Schlobockelheimer in the wine trade, whereas Thalbockelheim never cropped up in the wine trade. Municipal council asked on these grounds to have the historical name Schlobockelheim reinstated, as it was already well known throughout Germany for Emperor Heinrich IV's imprisonment at Castle Bockelheim (1105).Also given as grounds for the reversion to the older name was the name's recognizability in winegrowing and the wine trade. A decree made on 22 April 1911 approved the municipality's application. Since this time, the two constituent centres of Thalbockelheim and Schlobockelheim have been united under the collective name "Schlobockelheim". Among the places in the middle Naheraum (regions flanking the Nahe), Schlobockelheim belongs among those places that were already often being mentioned in the Middle Ages. Castle Bockelheim, built on what was to become Schlobockelheim's municipal area, was among the oldest in the region. Generally regarded as the village's first documentary mention is a document from 16 February 824. Late in 1105, Emperor Heinrich V, the last of the Salian dynasty, had his father, Emperor Heinrich IV taken prisoner in Ingelheim and then brought to Castle Bockelheim to be held prisoner there. In 1688, the Nine Years' War (known in Germany as the Pfalzischer Erbfolgekrieg, or War of the Palatine Succession) broke out. That year, the castle was destroyed on French orders.
Link Information: Holy Roman Emperor

Henry IV (; 11 November 1050 7 August 1106) Question: How much older was Emperor Heinrich's father than he was when he was taken prisoner in Ingleheim?
A:
Answer: 31