Complex sentence: Born in Banyoles, Girona, Catalonia, Mas graduated from Girona FC's youth setup, and made his senior debuts with the reserves in the regional leagues,, in the 2012--13 campaign.
Split into simpler sentences: Born in Banyoles, Girona, Catalonia, Mas graduated from Girona FC's youth setup. He made his senior debuts with the reserves in the regional leagues, in the 2012--13 campaign.