Answer the question from the given passage. Your answer should be directly extracted from the passage, and it should be a single entity, name, or number, not a sentence.

Ex Input:
Passage: ARPANET and SITA HLN became operational in 1969. Before the introduction of X.25 in 1973, about twenty different network technologies had been developed. Two fundamental differences involved the division of functions and tasks between the hosts at the edge of the network and the network core. In the datagram system, the hosts have the responsibility to ensure orderly delivery of packets. The User Datagram Protocol (UDP) is an example of a datagram protocol. In the virtual call system, the network guarantees sequenced delivery of data to the host. This results in a simpler host interface with less functionality than in the datagram model. The X.25 protocol suite uses this network type. Question: WHat does UserDatagram Protocol gaurentee

Ex Output:
In the virtual call system, the network guarantees sequenced delivery of data to the host


Ex Input:
Passage: As Jamukha and Temüjin drifted apart in their friendship, each began consolidating power, and soon became rivals. Jamukha supported the traditional Mongolian aristocracy, while Temüjin followed a meritocratic method, and attracted a broader, though lower class, range of followers. Due to his earlier defeat of the Merkits, and a proclamation by the shaman Kokochu that the Eternal Blue Sky had set aside the world for Temüjin, Temüjin began rising to power. In 1186, Temüjin was elected khan of the Mongols. However, Jamukha, threatened by Temüjin's rapid ascent, quickly moved to stop Temüjin's ambitions. In 1187, he launched an attack against his former friend with an army of thirty thousand troops. Temüjin hastily gathered together his followers to defend against the attack, but he was decisively beaten in the Battle of Dalan Balzhut. Jamukha horrified people greatly and harmed his image by boiling seventy young male captives alive in cauldrons, alienating many of his potential followers and eliciting sympathy for Temüjin. Toghrul, as Temüjin's patron, was exiled to the Qara Khitai. The life of Temüjin for the next ten years is very unclear, as historical records are mostly silent on that period. Question: Who did Jamukha support that were not part of Temüjin's power base?

Ex Output:
the traditional Mongolian aristocracy


Ex Input:
Passage: A prime number (or a prime) is a natural number greater than 1 that has no positive divisors other than 1 and itself. A natural number greater than 1 that is not a prime number is called a composite number. For example, 5 is prime because 1 and 5 are its only positive integer factors, whereas 6 is composite because it has the divisors 2 and 3 in addition to 1 and 6. The fundamental theorem of arithmetic establishes the central role of primes in number theory: any integer greater than 1 can be expressed as a product of primes that is unique up to ordering. The uniqueness in this theorem requires excluding 1 as a prime because one can include arbitrarily many instances of 1 in any factorization, e.g., 3, 1 · 3, 1 · 1 · 3, etc. are all valid factorizations of 3. Question: What theorem defines the main role of primes in number theory?

Ex Output:
fundamental theorem of arithmetic