Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_1756264_2 (company_name VARCHAR, parent__holding__company VARCHAR)
### Question:
How many companies have Postermobile Limited as a parent company?
### Answer:
SELECT COUNT(company_name) FROM table_1756264_2 WHERE parent__holding__company = "POSTERMOBILE LIMITED"