 Complete the following phrase:  Nestor Khergiani , born July 20, 1975 is a Georgian judoka. He obtained silver medal at the 2004 Summer Olympics in the -60 kg event where he lost in the final to Tadahiro Nomura. Khergiani won silver in 2007 World Judo Championships and bronze in 1999 World Judo Championships. At the European Judo Championships he won gold in 1998 and 2003, bronze in 1999, 2000, 