This task is about reading the given passage and construct a question about the information present in the passage. Construct a question in such a way that (i) it is unambiguous, (ii) it is answerable from the passage, (iii) its answer is unique (iv) its answer is a continuous text span from the paragraph. Avoid creating questions that (i) can be answered correctly without actually understanding the paragraph and (ii) uses same words or phrases given in the passage.

Likewise, group theory helps predict the changes in physical properties that occur when a material undergoes a phase transition, for example, from a cubic to a tetrahedral crystalline form. An example is ferroelectric materials, where the change from a paraelectric to a ferroelectric state occurs at the Curie temperature and is related to a change from the high-symmetry paraelectric state to the lower symmetry ferroelectic state, accompanied by a so-called soft phonon mode, a vibrational lattice mode that goes to zero frequency at the transition.
What aids in predicting changes of physical traits?

Although there were a number of department stores in Australia for much of the 20th Century, including chains such as Grace Bros. and Waltons, many disappeared during the 1980s and 1990s. Today Myer and David Jones, located nationally, are practically the national department stores duopoly in Australia. When Russian-born migrant, Sidney Myer, came to Australia in 1899 he formed the Myer retail group with his brother, Elcon Myer. In 1900, they opened the first Myer department store, in Bendigo, Victoria. Since then, the Myer retail group has grown to be Australia's largest retailer. Both, Myer and David Jones, are up-market chains, offering a wide variety of products from mid-range names to luxury brands. Other retail chain stores such as Target (unrelated to the American chain of the same name), Venture (now defunct), Kmart and Big W, also located nationally, are considered to be Australia's discount department stores. Harris Scarfe, though only operating in four states and one territory, is a department store using both the large full-line and small discount department store formats. Most department stores in Australia have their own credit card companies, each having their own benefits while the discount department stores do not have their own credit card rights.
What were some of the original Australian department stores?

Located approximately 250 kilometres (160 mi) east of Puerto Rico and the nearer Virgin Islands, St. Barthelemy lies immediately southeast of the islands of Saint Martin and Anguilla. It is one of the Renaissance Islands. St. Barthelemy is separated from Saint Martin by the Saint-Barthelemy Channel. It lies northeast of Saba and St Eustatius, and north of St Kitts. Some small satellite islets belong to St. Barthelemy including Ile Chevreau (Ile Bonhomme), Ile Fregate, Ile Toc Vers, Ile Tortue and Gros Ilets (Ilots Syndare). A much bigger islet, Ile Fourchue, lies on the north of the island, in the Saint-Barthelemy Channel. Other rocky islets which include Coco, the Roques (or little Turtle rocks), the Goat, and the Sugarloaf.
How many Miles East of Puerto Rico is St. Barts?