Using sakila database, answer the following questions with sql queries and/or subqueries:

1. display the title of the film with the largest number of actors.
2. using "having" to display which customer’s first names have appeared more than once?
3. query the top 5 customer’s names who spent the most on rental films. display customer id, name and the amount spent.
4. what’s the result of this query? and why? select * from film natural join inventory;
5. write an interesting query statement of your own, not shown in the questions. the query should include at least one natural join operator, having clause and aggregation operation. explain your query statement and the answer.