Question: Léontine de Maësen (15 July 1835 – 1906) was a Belgian coloratura soprano active on the opera stages of France from 1858 to 1868, most remembered today for having created the role of Leïla in Bizet's 1863 opera in three acts, titled what?
{'answer': 'Les pêcheurs de perles', 'supporting_facts': [['Léontine de Maësen', 1], ['Les pêcheurs de perles', 0]]}