The thunder roared as the hobbits hid. As the hobbits hid, the thunder roared.
Bilbo slept in a cave, therefore the goblins attacked.
The cart came to a wheezing halt as Gandalf strode into the hobbit hole.
Jim was interested in the idea so he rang his friend.
Owls are nocturnal so this means that they are very active at night and they have excellent eyesight.
Bob ran down the road, therefore he fell over. He fell over, therefore Bob ran down the road.