Given a context passage, generate a question from the passage such that its answer is shortest continous span from the passage.

Leke III Dukagjini (1410--1481), mostly known as Leke Dukagjini, was a mysterious member of the Dukagjini family about whom little is known and who is thought to have been a 15th-century Albanian nobleman.
What was the noble family that Leke Dukagjini was from?

Imatinib was the first BCR-ABL tyrosine kinase inhibitor to become clinically available. In this study, we retrospectively evaluated the long-term efficacy of low-dose imatinib (final maintenance dose <300mg per day) due to intolerance, in comparison to optimal-dose imatinib (300mg per day) in patients with Philadelphia chromosome-positive chronic myeloid leukemia in the chronic phase. The Kaplan-Meier estimates of the median time to complete cytogenetic response, major molecular response, and complete molecular response were longer for 31 patients receiving low-dose imatinib (360, 1360, and 1420days, respectively) than 74 patients receiving optimal-dose imatinib (170, 420, and 720days, respectively). However, the differences in response shrank over time and progression-free survival were comparable between the two groups. These findings suggest that long-term treatment with low-dose imatinib is an acceptable alternative for patients with intolerance to the optimal dose.
What tyrosine kinase, involved in a Philadelphia- chromosome positive chronic myelogenous leukemia, is the target of Imatinib (Gleevec)?

Gregory A. Feest (born 1956) is a United States Air Force Air Force major general who is currently serving as the Chief of Safety of the United States Air Force, Headquarters U.S. Air Force, Washington, D.C., and Commander, Air Force Safety Center, Kirtland Air Force Base, New Mexico.
What military branch did Gregory A. Feest belong to?