The population of Formentera's chief city has expanded to around 1,000, and there is a new town hall.
The population of Formentera's chief city expanded due to the influx of immigrants.
mnli hypothesis: The population of Formentera's chief city expanded due to the influx of immigrants. premise: The population of Formentera's chief city has expanded to around 1,000, and there is a new town hall.