1. that have nicknames - modifies cities

2. that has the nickname of Steel City - modifies city

3. whose inventions improved our lives - modifies people

4. which is an opera - modifies Madame Butterfly

5. whom we elected as our representative - modifies girl

6. who comes in first - modifies the pronoun, one

7. which is on the corner of State Street - modifies store

8. where we camp - modifies place

9. whose record was so doubtful - modifies man

10. when the eclipse will occur - modifies time