Complex sentence: Professional cooks were used in Sardinia during the Nuragic Age, as proved by the typical sculptures of the Bronze Age, and in Mycenaean Greece and they are mentioned in Linear b syllabic script.
Split into simpler sentences: Professional cooks were used in Sardinia during the Nuragic Age. This was proved by the typical sculptures of the Bronze Age, and in Mycenaean Greece and they are mentioned in Linear b syllabic script.