Input (grade 13): Sources disagree as to whether Ah Bing was responsible for developing the cultivar, or whether it was developed by Lewelling and named in Bing's honor due to his long service as orchard foreman.
Output (grade 12): Some say Ah Bing developed the cultivar, others that it was developed by Lewelling and named in Bing's honor due to his long service as orchard foreman.