In antiquity, the ancestors of the Somali people were an important link in the Horn of Africa connecting the region's commerce with the rest of the ancient world. Somali sailors and merchants were the main suppliers of frankincense, myrrh and spices, items which were considered valuable luxuries by the Ancient Egyptians, Phoenicians, Mycenaeans and Babylonians.
Along with myrrh and spices, what important luxury did ancient Somali merchants provide?
{'text': 'frankincense', 'answer_start': 219}