Original: Avul Pakir Jainulabdeen Abdul Kalam , ; born October 15 , 1931 , Tamil Nadu , India , usually referred to as Dr. A. P. J. Abdul Kalam ^ , was the eleventh President of India , serving from 2002 to 2007 .
Simplified: Dr. Avul Pakir Jainulabdeen Abdul Kalam ( born October 15 , 1931 ) is an Indian scientist and engineer .