Task: Question Generation
Input (English): Passage: The central square in Covent Garden is simply called "Covent Garden", often marketed as "Covent Garden Piazza" to distinguish it from the eponymous surrounding area. Designed and laid out in 1630, it was the first modern square in London—originally a flat, open space or piazza with low railings. From about 1635 onwards there were many private residents of note, including the nobility, living in the Great Piazza. A casual market started on the south side, and by 1830 the present market hall had been built. The space is popular with street performers, who audition with the site's owners for an allocated slot. The square was originally laid out when the 4th Earl of Bedford, Francis Russell, commissioned Inigo Jones to design and build a church and three terraces of fine houses around the site of a former walled garden belonging to Westminster Abbey. Jones's design was informed by his knowledge of modern town planning in Europe, particularly Piazza d'Arme, in Leghorn, Tuscany, Piazza San Marco in Venice, Piazza Santissima Annunziata in Florence, and the Place des Vosges in Paris. The centrepiece of the project was the large square, the concept of which was new to London, and this had a significant influence on modern town planning as the metropolis grew, acting as the prototype for the design of new estates, such as the Ladbroke Estate and the Grosvenor Estate. Isaac de Caus, the French Huguenot architect, designed the individual houses under Jones's overall design.The church of St Paul's was the first building, and was begun in July 1631 on the western side of the square. The last house was completed in 1637. Seventeen of the houses had arcaded portico walks organised in groups of four and six either side of James Street on the north side, and three and four either side of Russell Street. These arcades, rather than the square itself, took the name Piazza; the group from James Street to Russell Street became known as the "Great Piazza" and that to the south of Russell Street as the "Little Piazza". None of Inigo Jones's houses remain, though part of the north group was reconstructed in 1877–79 as Bedford Chambers by William Cubitt to a design by Henry Clutton.
Output (English): What year were the first building begun at Covent Garden?