In the ICC Under 19 ODI Cricket World Cup, Sri Lanka has won the toss and elected to field against India in the first semi-final at Sher-e-Bangla National Stadium in Dhaka.India were 21 for none in seven overs when reports last came in.The West Indies will face host Bangladesh in the second semi-final on Thursday.Earlier on Monday, the West Indies upset Pakistan by five wickets to cruise into the semi-finals.