This task is about creating an unanswerable question based on a given passage. Construct a question that looks relevant to the given context but is unanswerable. Following are a few suggestions about how to create unanswerable questions:
(i) create questions which require satisfying a constraint that is not mentioned in the passage
(ii) create questions which require information beyond what is provided in the passage in order to answer
(iii) replace an existing entity, number, date mentioned in the passage with other entity, number, date and use it in the question
(iv) create a question which is answerable from the passage and then replace one or two words by their antonyms or insert/remove negation words to make it unanswerable.
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Question: Passage: The ASA standard underwent a major revision in 1960 with ASA PH2.5-1960, when the method to determine film speed was refined and previously applied safety factors against under-exposure were abandoned, effectively doubling the nominal speed of many black-and-white negative films. For example, an Ilford HP3 that had been rated at 200 ASA before 1960 was labeled 400 ASA afterwards without any change to the emulsion. Similar changes were applied to the DIN system with DIN 4512:1961-10 and the BS system with BS 1380:1963 in the following years.

Answer: When were new safety factors put in place?


Question: Passage: The formation of the party was formally announced at Sydney Town Hall on 31 August 1945. It took the name "Liberal" in honour of the old Commonwealth Liberal Party. The new party was dominated by the remains of the old UAP; with few exceptions, the UAP party room became the Liberal party room. The Australian Women's National League, a powerful conservative women's organisation, also merged with the new party. A conservative youth group Menzies had set up, the Young Nationalists, was also merged into the new party. It became the nucleus of the Liberal Party's youth division, the Young Liberals. By September 1945 there were more than 90,000 members, many of whom had not previously been members of any political party.

Answer: Where was the formation of the UAP party officially announced?


Question: Passage: Some early male settlers married Indigenous American women and had informal unions with them. Early contact between Indigenous Americans and Europeans was often charged with tension, but also had moments of friendship, cooperation, and intimacy. Marriages took place in both English and Latin colonies between European men and Native women. For instance, on April 5, 1614, Pocahontas, a Powhatan woman in present-day Virginia, married the Englishman John Rolfe of Jamestown. Their son Thomas Rolfe was an ancestor to many descendants in First Families of Virginia. As a result, English laws did not exclude people with some Indigenous American ancestry from being considered English or white.

Answer:
Who did some early female settlers marry?