 Complete the following phrase:  At Ardmore, Bonnie Ntshalintshali was at first an apprentice, but in time she and Halsted ran the studio more as partners. In 1988 Ntshalintshali won the Corobrik National Ceramics Award. She and Halsted were jointly named winners of a Standard Bank Young Artist Award in 1990. In 1991, she was invited to design fabric prints based on her ceramics for a festival in Grahamstown. Her ceramics were featured at the 