This task is about writing a correct answer for the reading comprehension task. Based on the information provided in a given passage, you should identify the shortest continuous text span from the passage that serves as an answer to the given question. Avoid answers that are incorrect or provides incomplete justification for the question.

Input: Consider Input: Passage: In the mid-1950s, Frank Burnet, inspired by a suggestion made by Niels Jerne, formulated the clonal selection theory (CST) of immunity. On the basis of CST, Burnet developed a theory of how an immune response is triggered according to the self/nonself distinction: "self" constituents (constituents of the body) do not trigger destructive immune responses, while "nonself" entities (e.g., pathogens, an allograft) trigger a destructive immune response. The theory was later modified to reflect new discoveries regarding histocompatibility or the complex "two-signal" activation of T cells. The self/nonself theory of immunity and the self/nonself vocabulary have been criticized, but remain very influential. Question: What property of T cells caused modification of CST?

Output: the complex "two-signal" activation

Input: Consider Input: Passage: However, early Christian writers who speak of the shape of the particular gibbet on which Jesus died invariably describe it as having a cross-beam. For instance, the Epistle of Barnabas, which was certainly earlier than 135, and may have been of the 1st century AD, the time when the gospel accounts of the death of Jesus were written, likened it to the letter T (the Greek letter tau, which had the numeric value of 300), and to the position assumed by Moses in Exodus 17:1112. Justin Martyr (100165) explicitly says the cross of Christ was of two-beam shape: "That lamb which was commanded to be wholly roasted was a symbol of the suffering of the cross which Christ would undergo. For the lamb, which is roasted, is roasted and dressed up in the form of the cross. For one spit is transfixed right through from the lower parts up to the head, and one across the back, to which are attached the legs of the lamb." Irenaeus, who died around the end of the 2nd century, speaks of the cross as having "five extremities, two in length, two in breadth, and one in the middle, on which [last] the person rests who is fixed by the nails." Question: How many ends did the cross supposedly have?

Output: five extremities

Input: Consider Input: Passage: Several Muslim countries like Turkey and Iran exhibit high scientific publication. Some countries have tried to encourage scientific research. In Pakistan, establishment of the Higher Education Commission in 2002, resulted in a 5-fold increase in the number of PhDs and a 10-fold increase in the number of scientific research papers in 10 years with the total number of universities increasing from 115 in 2001 to over 400 in 2012.[citation needed] Saudi Arabia has established the King Abdullah University of Science and Technology. United Arab Emirates has invested in Zayed University, United Arab Emirates University, and Masdar Institute of Science and Technology[clarification needed] Question: What science university did Saudi Arabia establish?
Output: King Abdullah University of Science and Technology