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.

[Q]: Context: Built by the Shriners architects Huehl and Schmidt in 1912, the Medinah Temple is a colorful Islamic-looking building replete with pointed domes and an example of Moorish Revival architecture.
Question: The art style of Medinah Temple is what?
[A]: moorish revival architecture

[Q]: Context: Chronic lymphocytic leukemia (CLL) cells depend on microenvironmental factors for proliferation and survival. In particular, the B-cell receptor (BCR) and nuclear factor- B (NF-B) pathways are activated in the lymph node (LN) microenvironment. Thus, model systems mimicking tumor-host interactions are important tools to study CLL biology and pathogenesis. We investigated whether the recently established NOD/scid/c(null) (NSG) mouse xenograft model can recapitulate the effects of the human microenvironment. We assessed, therefore, tumor characteristics previously defined in LN-resident CLL cells, including proliferation, and activation of the BCR and NF-B pathways. We found that the murine spleen (SP) microenvironment supported CLL cell proliferation and activation to a similar degree than the human LN, including induction of BCR and NF-B signaling in the xenografted cells. Next, we used this model to study ibrutinib, a Bruton's tyrosine kinase inhibitor in clinical development. Ibrutinib inhibited BCR and NF-B signaling induced by the microenvironment, decreased proliferation, induced apoptosis and reduced the tumor burden in vivo. Thus, our data demonstrate that the SP of xenografted NSG mice can, in part, recapitulate the role of the human LN for CLL cells. In addition, we show that ibrutinib effectively disrupts tumor-host interactions essential for CLL cell proliferation and survival in vivo.
Question: What is the name of Bruton's tyrosine kinase inhibitor that can be used for treatment of chronic lymphocytic leukemia?
[A]: ibrutinib

[Q]: 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?
[A]:
d troop, 10th cavalry