One of the four people - Mr. Brown, his wife Monika, their son Mandy and their daughter Cindy - is a singer and another is a dancer.
- If the singer and the dancer are the same sex, then the dancer is older than the singer.
- If neither the singer nor the dancer is the parent of the other, then the singer is older than the dancer.
- If the singer is a man, then the singer and the dancer are the same age.
- If the singer and the dancer are of opposite sex then the man is older than the woman.
Whose occupation can you deduce with absolute certainty?