Name the number of pinyin where simplified is 河西区
CREATE TABLE table_1638437_2 (pinyin VARCHAR, simplified VARCHAR)
SELECT COUNT(pinyin) FROM table_1638437_2 WHERE simplified = "河西区"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_1638437_2 (pinyin VARCHAR, simplified VARCHAR) Question: Name the number of pinyin where simplified is 河西区 [/INST] SELECT COUNT(pinyin) FROM table_1638437_2 WHERE simplified = "河西区" </s>