Complex sentence: According to the census of 2012, there are about 3,886 Venezuelans in Costa Rica, live mainly in San Jose, and most live as a refugee from political problems that occur in the country.
Split into simpler sentences: According to the census of 2012, there are about 3,886 Venezuelans in Costa Rica that live mainly in San José. Most of them come as refugees from political problems that occur in the country.