In this task, you are given a question and a context passage. You have to answer the question based on the given passage.
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Question: What does every plane have?, Context: Grey-box testing (American spelling: gray-box testing) involves having knowledge of internal data structures and algorithms for purposes of designing tests, while executing those tests at the user, or black-box level. The tester is not required to have full access to the software's source code.[not in citation given] Manipulating input data and formatting output do not qualify as grey-box, because the input and output are clearly outside of the "black box" that we are calling the system under test. This distinction is particularly important when conducting integration testing between two modules of code written by two different developers, where only the interfaces are exposed for test.

Answer: black box

Question: How would I know if I could get Chopin to teach me to play the flute?, Context: In London Chopin took lodgings at Dover Street, where the firm of Broadwood provided him with a grand piano. At his first engagement, on 15 May at Stafford House, the audience included Queen Victoria and Prince Albert. The Prince, who was himself a talented musician, moved close to the keyboard to view Chopin's technique. Broadwood also arranged concerts for him; among those attending were Thackeray and the singer Jenny Lind. Chopin was also sought after for piano lessons, for which he charged the high fee of one guinea (1.05 in present British currency) per hour, and for private recitals for which the fee was 20 guineas. At a concert on 7 July he shared the platform with Viardot, who sang arrangements of some of his mazurkas to Spanish texts.

Answer: Chopin was also sought after for piano lessons

Question: what happens in late August?, Context: Newcastle Mela, held on the late August bank holiday weekend, is an annual two-day multicultural event, blending drama, music and food from Punjabi, Pakistani, Bengali and Hindu cultures. NewcastleGateshead also holds an annual International Arts Fair. The 2009 event will be in the Norman Foster designed Sage Gateshead Music and Arts Centre in September. In October, there is the Design Event festivalan annual festival providing the public with an opportunity to see work by regional, national and international designers. The SAMA Festival, an East Asian cultural festival is also held in early October.

Answer:
an annual two-day multicultural event, blending drama, music and food from Punjabi, Pakistani, Bengali and Hindu cultures