Given a question and a context passage, generate the answer having the word or phrase from the context passage. Here, the answer should be a shortest continous span from the passage.

Example Input: Context: Ion Assault is a multidirectional shooter video game developed by Coreplay and published by Black Inc. for the Xbox Live Arcade, PlayStation Network, and Microsoft Windows. 
 Question: Who worked on Ion Assault?
Example Output: coreplay

Example Input: Context: Dabigatran is a direct thrombin inhibitor used to reduce the risk of stroke in patients with nonvalvular atrial fibrillation. For patients who present with an acute stroke despite dabigatran therapy, clinical data on the use of intravenous tissue plasminogen activator (IV-tPA) is limited. There is an anticipated increased risk of symptomatic intracranial hemorrhage (sICH) when using IV-tPA in patients on dabigatran therapy. In 2015, the humanized monoclonal antibody fragment idarucizumab was approved for rapid (minutes) reversal of anticoagulant effects of dabigatran. Dabigatran reversal with idarucizumab before administration of IV-tPA might reduce the risk of sICH. We report a case of a 69-year-old stroke patient on dabigatran for paroxysmal atrial fibrillation who presented with an initial National Institutes of Health Stroke Scale (NIHSS) of 12. There was no early evidence of ischemic stroke or hemorrhage on head computed tomography, and coagulation studies implied therapeutic dabigatran levels. After controlling blood pressure, dabigatran was reversed with idarucizumab, and IV-tPA was administrated beginning 197minutes after he was last seen at his baseline. Subsequent brain magnetic resonance imaging showed 2 punctate infarcts in the left temporal lobe and occipital lobe with no evidence of hemorrhage. The patient was discharged with an NIHSS of 1. Telephone follow-up 2 months later indicated that he was at his prestroke baseline, except for a complaint of worsened short-term memory. Idarucizumab reversal of dabigatran may reduce the risk of sICH and should be considered for acute stroke patients arriving in the IV-tPA time window. 
 Question: Which drug can be reversed with idarucizumab?
Example Output: dabigatran

Example Input: Context: However, due to the U.S. Army's recent reorganization, only 4th Squadron remains in active service. 4th Squadron, 10th Cavalry takes its history and lineage from D Troop, 10th Cavalry. In 2000, D Troop, 10th U.S. Cavalry, was reactivated and assigned as the brigade reconnaissance troop for 3rd Brigade Combat Team, 3rd Infantry Division at Fort Benning, Georgia. D Troop, 10th Cavalry was deployed with 3/3 ID to Iraq in 2003, and was deactivated upon redeployment in 2004. It was reactivated in October 2007 at Fort Carson, Colorado, replacing the 2nd Squadron, 9th Cavalry regiment, as the 4th Squadron, 10th Cavalry Regiment with A, B, C, and HQ Troops as the reconnaissance squadron for 3rd Combat Brigade Team of the 4th Infantry Division. The 4th Squadron deployed to Iraq with the BCT from December 2007 to February 2009, and again in March 2010. The Squadron deployed to Jordan in 2015 in support of Operation Spartan Shield. In February 2016, Delta Tank Company from 1st Battalion, 8th Infantry Regiment moved to 4th Squadron, 10th Cavalry Regiment to be assigned as Dakota Troop. As of February 2016, 4th Squadron, 10th Cavalry Regiment is the only current active unit of the 10th Cavalry Regiment. 
 Question: What group replaced the 2nd Squadron at Fort Carlson, Colorado in October 2007?
Example Output:
d troop, 10th cavalry