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

Answer: antibodies


Question: What suggests the entire country plays sports at New Delhi?, Context: Major sporting venues in New Delhi include the Jawaharlal Nehru Stadium, Ambedkar Stadium, Indira Gandhi Indoor Stadium, Feroz Shah Kotla Ground, R.K. Khanna Tennis Complex, Dhyan Chand National Stadium and Siri Fort Sports Complex.

Answer: National Stadium


Question: What is the lower number of expansions?, Context: Near the end of the 19th century compound engines came into widespread use. Compound engines exhausted steam in to successively larger cylinders to accommodate the higher volumes at reduced pressures, giving improved efficiency. These stages were called expansions, with double and triple expansion engines being common, especially in shipping where efficiency was important to reduce the weight of coal carried. Steam engines remained the dominant source of power until the early 20th century, when advances in the design of electric motors and internal combustion engines gradually resulted in the replacement of reciprocating (piston) steam engines, with shipping in the 20th-century relying upon the steam turbine.

Answer:
double