Answer the question from the given passage. Your answer should be directly extracted from the passage, and it should be a single entity, name, or number, not a sentence.
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Question: Passage: Teachers in Wales can be registered members of trade unions such as ATL, NUT or NASUWT and reports in recent years suggest that the average age of teachers in Wales is falling with teachers being younger than in previous years. A growing cause of concern are that attacks on teachers in Welsh schools which reached an all-time high between 2005 and 2010. Question: What group can teachers in Wales register with?

Answer: trade unions


Question: Passage: Victoria has a written constitution enacted in 1975, but based on the 1855 colonial constitution, passed by the United Kingdom Parliament as the Victoria Constitution Act 1855, which establishes the Parliament as the state's law-making body for matters coming under state responsibility. The Victorian Constitution can be amended by the Parliament of Victoria, except for certain 'entrenched' provisions that require either an absolute majority in both houses, a three-fifths majority in both houses, or the approval of the Victorian people in a referendum, depending on the provision. Question: What are the exceptions in the constitution  that require special considerations to amend?

Answer: "entrenched" provisions


Question: Passage: The Grainger Market replaced an earlier market originally built in 1808 called the Butcher Market. The Grainger Market itself, was opened in 1835 and was Newcastle's first indoor market. At the time of its opening in 1835 it was said to be one of the largest and most beautiful markets in Europe. The opening was celebrated with a grand dinner attended by 2000 guests, and the Laing Art Gallery has a painting of this event. With the exception of the timber roof which was destroyed by a fire in 1901 and replaced by latticed-steel arches the Market is largely in its original condition. The Grainger Market architecture, like most in Grainger Town, which are either grade I or II listed, was listed grade I in 1954 by English Heritage. Question: How is the opening of the Grainger Market documented in the Laing Art Gallery?

Answer:
a painting