What is the total outcome for the clay surface on April 21, 1996?
CREATE TABLE table_name_91 (outcome VARCHAR, surface VARCHAR, date VARCHAR)
SELECT outcome FROM table_name_91 WHERE surface = "clay" AND date = "april 21, 1996"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_name_91 (outcome VARCHAR, surface VARCHAR, date VARCHAR) Question: What is the total outcome for the clay surface on April 21, 1996? [/INST] SELECT outcome FROM table_name_91 WHERE surface = "clay" AND date = "april 21, 1996" </s>