Given the following schema, write the SQL statements for the following queries.

Query 1) Show the titles of all the books which have more than 5 units in stock.

Query 2) Show the total price John Smith has paid for the books.

Query 3) Show me the name of the customer who has paid less than $20 in totals.

Suppliers (SupplierID, Company Name, Cont actLastName, ContactFirstName, Phone) Books (BookID. Title, ?nit-Price, Author, Unit-in-Stock, Supplier!D. . SubjectID) Subjects (SubjectID. CategoryName) OrderDetails (BookID. OrderID. Quantity) * * * Orders (OrderID, CustomerID. EmployeeID, OrderDate, ShippedDate, ShipperID) . Employees (EmploveeID, LastName, FirstName) * Shippers (ShipperID.ShpperName)