Among the orders with sales value of no less than 5,000 in west superstore, how many were bought by the customers in California?
customers in California refers to State = 'California'; orders with sales value of no less than 5,000 refers to Sales > = 5,000
SELECT COUNT(DISTINCT T1.`Order ID`) FROM west_superstore AS T1 INNER JOIN product AS T2 ON T1.`Product ID` = T2.`Product ID` INNER JOIN people AS T3 ON T3.`Customer ID` = T1.`Customer ID` WHERE T1.Sales > 5000 AND T3.State = 'California' AND T2.Region = 'West'