Question: Rakesh Kr Yadav specializes in what throing event in regular track and field competition that consists of a metal ball attached by a steel wire to a grip?

<P0-S0> Rakesh Kr Yadav (born 2 October 1977) is an Indian track and field athlete from Uttar Pradesh who specializes in Hammer throw. <P0-S1>  Kumar set the Indian National record of 70.16m in the discipline on 17 July 2003 during the Second National Athletic Circuit Meet in Bangalore. <P0-S2>  He erased the 70.13 metre mark of Ishtiaq Ahamed set there in the year 2000. <SEP> <P1-S0> The hammer throw is one of the four throwing events in regular track and field competitions, along with the discus throw, shot put and javelin. <P1-S1>  The "hammer" used in this sport is not like any of the tools also called by that name. <P1-S2>  It consists of a metal ball attached by a steel wire to a grip. <P1-S3>  The size of the ball varies between men's and women's competitions (see Competition section below for details). <SEP> <P2-S0> The Pedro's Cup is a biannual athletics event of two legs, which features an indoor track and field competition in January or February and an outdoor competition during the European summer period. <P2-S1>  The first competition of each year since 2005 has taken place in Bydgoszcz, Poland. <P2-S2>  The second competition of each year has taken place in another city, currently Poznan, Warsaw and Szczecin have hosted the summer/autumn Pedro's cup competition. <P2-S3>  The event typically draws top level competition, including at least fifteen Olympic medalists in 2008 and more in 2009. <P2-S4>  The meet is unique because it draws best athletes of the world to compete in a rather cold climate. <SEP> <P3-S0> A Wire gauze is a sheet of thin metal that has net-like crosses or a wire mesh. <P3-S1>  Wire gauze is placed on the support ring that is attached to the retort stand between the Bunsen burner and the beakers in order to support the beakers or other glassware or flasks during heating. <P3-S2>  Moreover, the glassware has to be flat-bottomed to stay on the wire gauze. <P3-S3>  The wire gauze is made of a . <P3-S4>  This type of material provides long life expectancy and can be used over and over again without a risk of it being torn. <P3-S5>  The sides/corners of the wire gauze are turned inward to help prevent fraying, improve handling and reduce safety risk from protruding ends of wire. <P3-S6>  The wire gauze is an important piece of supporting equipment in a laboratory because beakers or any type of glassware cannot be heated directly with a flame from the Bunsen burner, and the wire gauze will help protect the glassware. <P3-S7>  There are two types of wire gauze: woven wire gauze and a wire gauze with a ceramic center. <P3-S8>  These two types of wire gauze that are made of metal have the same ability to transmit the heat efficiently, but the gauze with a ceramic center will allow the heat to be dispersed more evenly. <P3-S9>  The ceramic at the center of the wire gauze is enmeshed at high pressure to prevent it from peeling. <P3-S10>  There are three sizes of wire gauze with ceramic center: 4 inches, 5 inches, and 6 inches, so that different sizes of glassware can be accommodated.