Complex sentence: Frederick II (26 December 1194--13 December 1250) was the Head of the House of Hohenstaufen and he spoke Latin, Sicilian, German, French, Greek and Arabic.
Split into simpler sentences: Frederick II (26 December 1194--13 December 1250) was the Head of the House of Hohenstaufen. Friedrich II spoke Latin, Sicilian, German, French, Greek and Arabic.