Once upon a time, there lived a boy named Sam. Sam lived with mom, dad and brother John. One day, Sam decided to go to the Stanford museum. He saw lots of vaccines there. He asked, ” Who invented the first vaccine?” to Peter, the museum keeper.
“Then you have to go to this room”, said Peter. Sam went inside the room and there he saw a ghost! He ran out of the room. Peter took Sam back to the haunted room.
“Don’t worry, I am not a ghost but a very old man”, said the old man. Sam said , “Oh! so you are Dr. Jenner. I have read about you”.
“Did you invent the first vaccine?” he asked. Dr.Jenner told yes. Sam and his family said bye, thank you and left the museum.