Which Tournament has a Semi finalists of mary pierce elena dementieva?
CREATE TABLE table_name_15 (tournament VARCHAR, semi_finalists VARCHAR)
SELECT tournament FROM table_name_15 WHERE semi_finalists = "mary pierce elena dementieva"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_name_15 (tournament VARCHAR, semi_finalists VARCHAR) Question: Which Tournament has a Semi finalists of mary pierce elena dementieva? [/INST] SELECT tournament FROM table_name_15 WHERE semi_finalists = "mary pierce elena dementieva" </s>