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

[Q]: What does the S in "OAS" stand for?, Context: Further conventions were adopted at the regional level under the aegis of the Organization of American States (OAS or OEA), the African Union, and in 2003, at the universal level under that of the United Nations Convention against Corruption.
[A]: States


[Q]: What is the most common way to transmit email?, Context: Many mailbox providers are also access providers, while others are not (e.g., Yahoo! Mail, Outlook.com, Gmail, AOL Mail, Po box). The definition given in RFC 6650 covers email hosting services, as well as the relevant department of companies, universities, organizations, groups, and individuals that manage their mail servers themselves. The task is typically accomplished by implementing Simple Mail Transfer Protocol (SMTP) and possibly providing access to messages through Internet Message Access Protocol (IMAP), the Post Office Protocol, Webmail, or a proprietary protocol.
[A]: (SMTP)


[Q]: Coming back is a form of?, Context: Theravadin Buddhists believe that personal effort is required to realize rebirth. Monks follow the vinaya: meditating, teaching and serving their lay communities. Laypersons can perform good actions, producing merit.
[A]:
rebirth