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

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.
(SMTP)

What developed later, marsupials or Juramaia sinensis?, Context: The oldest known fossil among the Eutheria ("true beasts") is the small shrewlike Juramaia sinensis, or "Jurassic mother from China", dated to 160 million years ago in the Late Jurassic. A later eutherian, Eomaia, dated to 125 million years ago in the Early Cretaceous, possessed some features in common with the marsupials but not with the placentals, evidence that these features were present in the last common ancestor of the two groups but were later lost in the placental lineage. In particular:
marsupials

How tall was the dome of the main synagogue in Alsace?, Context: After the ceasefire following the Fall of France in June 1940, Alsace was annexed to Germany and a rigorous policy of Germanisation was imposed upon it by the Gauleiter Robert Heinrich Wagner. When, in July 1940, the first evacuees were allowed to return, only residents of Alsatian origin were admitted. The last Jews were deported on 15 July 1940 and the main synagogue, a huge Romanesque revival building that had been a major architectural landmark with its 54-metre-high dome since its completion in 1897, was set ablaze, then razed.

54-metre