context: Aliko Dangote (born 10 April 1957) is a businessman in Nigeria. He is the owner of Dangote Group, which has operations in Nigeria and several other West African countries. A wealthy aide to former President Olusegun Obasanjo and the ruling People's Democratic Party (PDP), Dangote runs a Nigerian commodity business through his company and gets in touch with politicians. With an estimated net worth of about $ 2.5 billion, he was rated by Forbes as one of the richest African nationals, behind Mohammed Al Amoudi ($ 9.0 billion) and Oprah Winfrey ($ 2,7 billion). ]
question: What year was Dangote born?
answers.text: 1957