Question: What is the birthdate of this British political activist and leader of the British suffragette movement who helped women win the right to vote and who tightly controlled the membership and policies of Women's Social and Political Union?
Sentence (from "Women's Social and Political Union"): The Women's Social and Political Union (WSPU) was the leading militant organisation campaigning for Women's suffrage in the United Kingdom, 1903–1917.
Relevant evidence: Yes