With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Andy Roddick is married to a tennis player
text_B: Cal Ripken 's Real Baseball , also known as Real Baseball Online or Ultimate Baseball Online , was the first free-to-play baseball based massively multiplayer online sports game -LRB- MMOSG -RRB- .. Baseball. Baseball. MMOSG. MMOSG. Cal Ripken. Cal Ripken. free-to-play. free-to-play. baseball. baseball. massively multiplayer. Massively multiplayer online game. sports. sports. game. Computer and video games. Operating from 2003 until 2008 , the game was developed and published by Netamin Communication Corporation .. game. Computer and video games. The game was designed to allow 18 human-controlled players to compete simultaneously in virtual game , though the number was later reduced due to lag issues .. game. Computer and video games. Former Major League Baseball player Darrell Evans served as the game 's spokesperson / ambassador prior to Cal Ripken 's endorsement of the game .. Baseball. Baseball. Cal Ripken. Cal Ripken. game. Computer and video games. Darrell Evans. Darrell Evans. After it ceased operation in 2008 , a fan-led open source project was attempted before Real Baseball 's successor , Big League Online , was released for beta testing in early 2011 .. Baseball. Baseball
not_related.