In this task, you are given a context paragraph of the tweet and question. Your task is to generate right answer of given question based on given context tweet paragraph.

Context: People in Seoul are alarmed by the increasing number of "sinkholes" appearing on streets The Korea Times (@koreatimes1) July 21, 2014 Question: what are the people alarmed by?
increasing number of "sinkholes"

Context: Obama tells an Army veteran's widow: The VA has been "overwhelmed," and it is "inexcusable" CNN Politics (@CNNPolitics) September 29, 2016 Question: who spoke to an army veteran's widow?
obama

Context: Vets saw a fetus on Mei Xiang's ultrasound today. Paws crossed 4 viable pregnancy #PandaStory National Zoo (@NationalZoo) August 19, 2015 Question: what type of medical imagery was used?
ultrasound.