Question: On which Portuguese island has the largest European airline by scheduled passengers flown had a base since 2015?
Sentence (from "Convent of São Francisco (Angra do Heroísmo)"): Better recognizable for the large "Church of Our Lady of the Guide" (Portuguese: "Igreja de Nossa Senhora da Guia" ), is its locally known as the "Igreja do Convento de São Francisco", ("Church of the Convent of São Francisco"), one of the largest of Christian temples in the Azores, and former seat of the Franciscan Province of São João Evangelista, during the Age of Discovery.
Relevant evidence: No