Best movies on amazon prime that are oscar winners in writing (original screenplay) category

Actors : Michelle Williams, Lucas Hedges, Kyle Chandler, Casey Affleck,
Directors : Kenneth Lonergan,

A depressed uncle is asked to take care of his teenage nephew after the boy's father dies.

Actors : Kate Winslet, Tom Wilkinson, Gerry Robert Byrne, Jim Carrey,
Directors : Michel Gondry,

When their relationship turns sour, a couple undergoes a procedure to have each other erased from their memories. But it is only through the process of loss that they discover what they had to begin with.