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.

Example Input: Passage: Though researchers generally believe that sexual orientation is not determined by any one factor but by a combination of genetic, hormonal, and environmental influences, with biological factors involving a complex interplay of genetic factors and the early uterine environment, they favor biological models for the cause. They believe that sexual orientation is not a choice, and some of them believe that it is established at conception. That is, individuals do not choose to be homosexual, heterosexual, bisexual, or asexual. While current scientific investigation usually seeks to find biological explanations for the adoption of a particular sexual orientation, there are yet no replicated scientific studies supporting any specific biological etiology for sexual orientation. However, scientific studies have found a number of statistical biological differences between gay people and heterosexuals, which may result from the same underlying cause as sexual orientation itself. Question: What do researchers generally believe causes sexual orientation?
Example Output: a combination of genetic, hormonal, and environmental influences

Example Input: Passage: According to the Constitution of Estonia (Estonian: Pohiseadus) the supreme power of the state is vested in the people. The people exercise their supreme power of the state on the elections of the Riigikogu through citizens who have the right to vote. The supreme judicial power is vested in the Supreme Court or Riigikohus, with nineteen justices. The Chief Justice is appointed by the parliament for nine years on nomination by the president. The official Head of State is the President of Estonia, who gives assent to the laws passed by Riigikogu, also having the right of sending them back and proposing new laws. Question: Who holds supreme judicial power in Estonia?
Example Output: the Supreme Court or Riigikohus

Example Input: Passage: The government has assembled a National Human Rights Commission that consists of 15 members from various backgrounds. Several activists in exile, including Thee Lay Thee Anyeint members, have returned to Myanmar after President Thein Sein's invitation to expatriates to return home to work for national development. In an address to the United Nations Security Council on 22 September 2011, Myanmar's Foreign Minister Wunna Maung Lwin confirmed the government's intention to release prisoners in the near future. Question: Who extended the offer to the activists ?
Example Output:
President Thein Sein