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

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.
antibodies

What is the first low value sales item IBM abandoned, Context: IBM has constantly evolved since its inception. Over the past decade, it has steadily shifted its business mix by exiting commoditizing markets such as PCs, hard disk drives and DRAMs and focusing on higher-value, more profitable markets such as business intelligence, data analytics, business continuity, security, cloud computing, virtualization and green solutions, resulting in a higher quality revenue stream and higher profit margins. IBM's operating margin expanded from 16.8% in 2004 to 24.3% in 2013, and net profit margins expanded from 9.0% in 2004 to 16.5% in 2013.
PCs

How is Valencia pronounced in English?, Context: Valencia (/vəˈlɛnsiə/; Spanish: [baˈlenθja]), or València (Valencian: [vaˈlensia]), is the capital of the autonomous community of Valencia and the third largest city in Spain after Madrid and Barcelona, with around 800,000 inhabitants in the administrative centre. Its urban area extends beyond the administrative city limits with a population of around 1.5 million people. Valencia is Spain's third largest metropolitan area, with a population ranging from 1.7 to 2.5 million. The city has global city status. The Port of Valencia is the 5th busiest container port in Europe and the busiest container port on the Mediterranean Sea.

vəˈlɛnsiə