Please answer a question about the following article about Catalan language:

In 2011, the Aragonese government passed a decree for the establishment of a new language regulator of Catalan in La Franja (the so-called Catalan-speaking areas of Aragon). The new entity, designated as Acadèmia Aragonesa del Català, shall allow a facultative education in Catalan and a standardization of the Catalan language in La Franja.

Where is the Catalan speaking part of Aragon?
La Franja