Consider the following Schemas
Movies (title, year, length, genre, studio, producerName, total Income)
StarsIn (title, year, starName)
MovieExec (name, address, cert#, netWorth)
MovieStar (StarName, address, gender, date of birth)
Procuder (producerName, address, net worth)

Write SQL queries for the following:
a)Find all the animation movies released in 2017 by Marvel.
b)List the number of movies produced by Stan Lee with the total number of different movie stars in those movies.
c)List the movie, which contributes more than 25% of the net income of its producer.