C. Identify the way each italicized noun is used. Use S for subject, SC for subject complement, and App for appositive. 16. At least 50 times a year the Empire State Building is struck by lightning. 17. Hippocrates, the Father of Medicine, applied logic to medicine. 18. A major improvement in health care was the development of vaccines. 19. Triskaidekaphobia is the fear of the number 13. 20. One major tourist attraction is the Great Wall of China. 21. Robinson Crusoe, a marooned sailor, was on an island 28 years.​