What is the arena capacity of the arena in the town whose head coach is Roberto Serniotti?
CREATE TABLE table_19526911_1 (arena__capacity_ VARCHAR, head_coach VARCHAR)
SELECT arena__capacity_ FROM table_19526911_1 WHERE head_coach = "Roberto Serniotti"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_19526911_1 (arena__capacity_ VARCHAR, head_coach VARCHAR) Question: What is the arena capacity of the arena in the town whose head coach is Roberto Serniotti? [/INST] SELECT arena__capacity_ FROM table_19526911_1 WHERE head_coach = "Roberto Serniotti" </s>