The following relations keep track of airline flight information: Flight (flno: int, from: varchar(20), to: varchar(20), distance: real, departs: time, arrives: time, price: real) Aircraft (aid: int, aname: varchar(20), cruisingrange: real) Certified (eid: int, aid: int) Employee (eid: int, ename: varchar(20), salary: real) Note that the Employee relation describes pilots and other kinds of employees as well; every pilot is certified for some aircraft, and only pilots are certified to fly. Write each of the following queries in SQL. a) For each pilot who is certified for more than three aircrafts, find the eid and the maximum cruisingrange of the aircraft for which she or he is certified. b) Find the names of pilots whose salary is less than the price of the cheapest flight from Los Angeles, CA to Valdosta, GA. c) Find the names of pilots certified for some Boeing aircraft. (Hint: consider substring pattern matching)