'Solution'

db/models.py

@@ -1 +1,10 @@
 from django.db import models
+
+
+class Genre(models.Model):
+    name = models.CharField(max_length=255)
+
+
+class Actor(models.Model):
+    first_name = models.CharField(max_length=255)
+    last_name = models.CharField(max_length=255)

main.py

@@ -2,6 +2,27 @@
 
 from django.db.models import QuerySet
 
+from db.models import Genre, Actor
+
 
 def main() -> QuerySet:
-    pass
+    Genre.objects.create(name="Western")
+    Genre.objects.create(name="Action")
+    Genre.objects.create(name="Dramma")
+
+    Actor.objects.create(first_name="George", last_name="Klooney")
+    Actor.objects.create(first_name="Kianu", last_name="Reaves")
+    Actor.objects.create(first_name="Scarlett", last_name="Keegan")
+    Actor.objects.create(first_name="Will", last_name="Smith")
+    Actor.objects.create(first_name="Jaden", last_name="Smith")
+    Actor.objects.create(first_name="Scarlett", last_name="Johansson")
+
+    Genre.objects.filter(name="Dramma").update(name="Drama")
+    Actor.objects.filter(last_name="Klooney").update(last_name="Clooney")
+    Actor.objects.filter(first_name="Kianu").update(first_name="Keanu",
+                                                    last_name="Reeves")
+
+    Genre.objects.filter(name="Action").delete()
+    Actor.objects.filter(first_name="Scarlett").delete()
+
+    return Actor.objects.filter(last_name="Smith").order_by("first_name")