Q: This task involves creating answers to complex questions, from a given passage. Answering these questions, typically involve understanding multiple sentences. Make sure that your answer has the same type as the "answer type" mentioned in input. The provided "answer type" can be of any of the following types: "span", "date", "number". A "span" answer is a continuous phrase taken directly from the passage or question. You can directly copy-paste the text from the passage or the question for span type answers. If you find multiple spans, please add them all as a comma separated list. Please restrict each span to five words. A "number" type answer can include a digit specifying an actual value. For "date" type answers, use DD MM YYYY format e.g. 11 Jan 1992. If full date is not available in the passage you can write partial date such as 1992 or Jan 1992. If you find multiple spans, please add them all as a comma separated list. Please restrict each span to five words.
Passage: The Dutch Reformed Church went with migrants to the Americas, beginning in 1628 in New Amsterdam. St. Thomas Reformed Church, founded in 1660 in St. Thomas, Danish West Indies, became the first Dutch Reformed Church in the Caribbean. During the period of Dutch settlement in Brazil in the 17th century colonists organised the Reformed Churchin Pernambuco. In Canada and the United States, the oldest and second largest body is the Reformed Church in America, which was the American branch of the Dutch Reformed Church in the Netherlands between 1628 and 1819. The largest Dutch Reformed body in North America, the Christian Reformed Church in North America, split off from Reformed Church in America in 1857. Smaller related denominations and federations include the Canadian and American Reformed Churches, the Free Reformed Churches of North America , the Heritage Reformed Congregations , the Netherlands Reformed Congregations , the Protestant Reformed Churches in America , and the United Reformed Churches in North America . Former US Presidents Martin Van Buren and Theodore Roosevelt, both of Dutch descent, were affiliated with the Dutch Reformed Church.
Question: How many former US Presidents were affiliated with the Dutch Reformed Church?
Answer type: Number
A:
2.