List the names of actors and their musical names.
select t1.name,t2.name from actor as t1 join musical as t2 on t1.musical_id = t2.musical_id
Order the names of actors in in descending order of the year their musical is awarded.
select t1.name from actor as t1 join musical as t2 on t1.musical_id = t2.musical_id order by t2.year desc