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.

Q: Roofs are traditionally constructed from Alpine rocks such as pieces of schist, gneiss or slate. Such chalets are typically found in the higher parts of the valleys, as in the Maurienne valley in Savoy, where the amount of snow during the cold months is important. The inclination of the roof cannot exceed 40%, allowing the snow to stay on top, thereby functioning as insulation from the cold. In the lower areas where the forests are widespread, wooden tiles are traditionally used. Commonly made of Norway spruce, they are called "tavaillon". The Alpine regions are multicultural and linguistically diverse. Dialects are common, and vary from valley to valley and region to region. In the Slavic Alps alone 19 dialects have been identified. Some of the French dialects spoken in the French, Swiss and Italian alps of Aosta Valley derive from Arpitan, while the southern part of the western range is related to Old Provençal; the German dialects derive from Germanic tribal languages. Romansh, spoken by two percent of the population in southeast Switzerland, is an ancient Rhaeto-Romanic language derived from Latin, remnants of ancient Celtic languages and perhaps Etruscan.

A: What are roofs traditionally constructed from? 
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Q: The timing of migration seems to be controlled primarily by changes in day length. Migrating birds navigate using celestial cues from the sun and stars, the earth's magnetic field, and probably also mental maps.

A: What causes the timing of migration?
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Q: Despite the fact that the Cubs had won 89 games, this fallout was decidedly unlovable, as the Cubs traded superstar Sammy Sosa after he had left the season's final game early and then lied about it publicly. Already a controversial figure in the clubhouse after his corked-bat incident, Sammy's actions alienated much of his once strong fan base as well as the few teammates still on good terms with him, (many teammates grew tired of Sosa playing loud salsa music in the locker room) and possibly tarnished his place in Cubs' lore for years to come. The disappointing season also saw fans start to become frustrated with the constant injuries to ace pitchers Mark Prior and Kerry Wood. Additionally, the '04 season led to the departure of popular commentator Steve Stone, who had become increasingly critical of management during broadcasts and was verbally attacked by reliever Kent Mercker. Things were no better in 2005, despite a career year from first baseman Derrek Lee and the emergence of closer Ryan Dempster. The club struggled and suffered more key injuries, only managing to win 79 games after being picked by many to be a serious contender for the N.L. pennant. In 2006, bottom fell out as the Cubs finished 66–96, last in the NL Central.

A:
Who did the Cubs trade after leaving the final game early and lieing about it?
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