Question: The Convention People's Party (CPP) () is a socialist political party in Ghana based on the ideas of Kwame Nkrumah,the first prime minister and president of Ghana, having led it to independence from Britain in what year?
Sentence (from "Kwame Nkrumah"): Kwame Nkrumah PC (21 September 1909 – 27 April 1972) was the first prime minister and president of Ghana, having led it to independence from Britain in 1957.
Relevant evidence: Yes