Jim, Sam, Linda and I live in a building(建筑物) with four floors. We live on the different floors. We have different jobs. One is a teacher; One is a pilot; One is a painter and one is a doctor. I live above Linda but below Jim. Sam lives on the fourth floor. The driver lives above the pilot but below the doctor. The painter lives on the first floor. Do you know who I am and what my job is?