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 1968, ABC took advantage of new FCC ownership regulations that allowed broadcasting companies to own a maximum of seven radio stations nationwide in order to purchase Houston radio stations KXYZ and KXYZ-FM for $1 million in shares and $1.5 million in bonds. That year, Roone Arledge was named president of ABC Sports; the company also founded ABC Pictures, a film production company which released its first picture that year, the Ralph Nelson-directed Charly. It was renamed ABC Motion Pictures in 1979; the unit was dissolved in 1985. The studio also operated two subsidiaries, Palomar Pictures International and Selmur Pictures. In July 1968, ABC continued its acquisitions in the amusement parks sector with the opening of ABC Marine World in Redwood City, California; that park was sold in 1972 and demolished in 1986, with the land that occupied the park later becoming home to the headquarters of Oracle Corporation. Question: Where was ABC Marine World opened?

Output: Redwood City, California


Input: Consider Input: Passage: Reflections generally affect polarization. For radio waves, one important reflector is the ionosphere which can change the wave's polarization. Thus for signals received following reflection by the ionosphere (a skywave), a consistent polarization cannot be expected. For line-of-sight communications or ground wave propagation, horizontally or vertically polarized transmissions generally remain in about the same polarization state at the receiving location. Matching the receiving antenna's polarization to that of the transmitter can make a very substantial difference in received signal strength. Question: What reflector can change the waves polarization?

Output: ionosphere


Input: Consider Input: Passage: Presbyterianism is a part of the Reformed tradition within Protestantism which traces its origins to the British Isles. Presbyterian churches derive their name from the presbyterian form of church government, which is governed by representative assemblies of elders. Many Reformed churches are organized this way, but the word "Presbyterian," when capitalized, is often applied uniquely to the churches that trace their roots to the Scottish and English churches that bore that name and English political groups that formed during the English Civil War. Presbyterian theology typically emphasizes the sovereignty of God, the authority of the Scriptures, and the necessity of grace through faith in Christ. Presbyterian church government was ensured in Scotland by the Acts of Union in 1707 which created the kingdom of Great Britain. In fact, most Presbyterians found in England can trace a Scottish connection, and the Presbyterian denomination was also taken to North America mostly by Scots and Scots-Irish immigrants. The Presbyterian denominations in Scotland hold to the theology of John Calvin and his immediate successors, although there are a range of theological views within contemporary Presbyterianism. Local congregations of churches which use presbyterian polity are governed by sessions made up of representatives of the congregation (elders); a conciliar approach which is found at other levels of decision-making (presbytery, synod and general assembly). Question: Where can you trace back the origins of Presbyterianism back to?


Output: British Isles