In this task, you are given a question and a context passage. You have to answer the question based on the given passage.

[Q]: Antigens illicit the release of what in the body?, Context: The humoral (antibody) response is defined as the interaction between antibodies and antigens. Antibodies are specific proteins released from a certain class of immune cells known as B lymphocytes, while antigens are defined as anything that elicits the generation of antibodies ("anti"body "gen"erators). Immunology rests on an understanding of the properties of these two biological entities and the cellular response to both.
[A]: antibodies


[Q]: how many seats does the theatre located on First Hill have?, Context: The 5th Avenue Theatre, built in 1926, stages Broadway-style musical shows featuring both local talent and international stars. Seattle has "around 100" theatrical production companies and over two dozen live theatre venues, many of them associated with fringe theatre; Seattle is probably second only to New York for number of equity theaters (28 Seattle theater companies have some sort of Actors' Equity contract). In addition, the 900-seat Romanesque Revival Town Hall on First Hill hosts numerous cultural events, especially lectures and recitals.
[A]: 900


[Q]: which type of labor is mentioned first?, Context: East and Central Africa's biggest economy has posted tremendous growth in the service sector, boosted by rapid expansion in telecommunication and financial activity over the last decade, and now[when?] contributes 62% of GDP. 22% of GDP still comes from the unreliable agricultural sector which employs 75% of the labour force (a consistent characteristic of under-developed economies that have not attained food security – an important catalyst of economic growth) A small portion of the population relies on food aid.[citation needed] Industry and manufacturing is the smallest sector, accounting for 16% of GDP. The service, industry and manufacturing sectors only employ 25% of the labour force but contribute 75% of GDP.
[A]:
service