VARANASI, April 21 -- A 17-year-old boy died after falling into a well, and three others were injured during a clash allegedly with a group of baraatis over the demand to change a song in Sardaha village under Duddhi police station area of Sonbhadra district on the intervening night of Saturday and Sunday, police said. The deceased was identified as Mohit Yadav, who was a Class 12 student. Those injured included Neeraj (20), Motilal Yadav (22) and Asharfi Lal Yadav (22), all residents of Sardaha, police said....