 Complete the following phrase:  Uncle Cent moved to Paris in 1858 and took residence at 9 Rue Chaptal, which housed Goupils headquarters, too. In 1861, he became partner of Goupil  Cie. As Uncle Cent had no children, his nephews were evidently supposed to follow him up in the firm: Vincent entered in 1869, Theo in 1873. When Vincent was sacked by Léon Boussod in 1876, the balance between the shareholders suffered - and so Theo got his chance. Called to the Paris office for the time of the 