Task: Question Answering
Input (English): Context: A velodrome is an arena for track cycling. Modern velodromes feature steeply banked oval tracks, consisting of two 180-degree circular bends connected by two straights. The straights transition to the circular turn through a moderate easement curve., A team time trial (TTT) is a road-based bicycle race in which teams of cyclists race against the clock (see individual time trial for a more detailed description of ITT events)., Kristin Armstrong ( born August 11 , 1973 ) is a professional road bicycle racer and two - time Olympic gold medalist , the winner of the women 's individual time trial in 2008 and 2012 . Before temporarily retiring to start a family in 2009 , she rode for Cervélo TestTeam in women 's elite professional events on the National Racing Calendar ( NRC ) and UCI Women 's World Cup . She announced a return to competitive cycling beginning in the 2011 season , competing for Peanut Butter & Co. TWENTY12 at the Redlands Classic ., An individual time trial (ITT) is a road bicycle race in which cyclists race alone against the clock on flat or rolling terrain, or up a mountain road such as Alpe d'Huez (in French: "contre la montre"  literally "against the watch", in Italian: "tappa a cronometro" "stopwatch stage"). There are also track-based time trials where riders compete in velodromes, and team time trials (TTT). ITTs are also referred to as "the race of truth", as winning depends only on each rider's strength and endurance, and not on help provided by team-mates and others riding ahead and creating a slipstream. The opening stage of stage race will often be a short individual time trial called a prologue., Subject: kristin armstrong, Relation: sport, Options: (A) cycling (B) team time trial (C) track cycling
Output (English): track cycling