Question:
Which political party did Cecil L'Estrange Malone belong to in Jan, 1922?

Context:
 Cecil L'Estrange Malone is a member of the Liberal Party from Jan, 1918 to Jan, 1919. 
 Cecil L'Estrange Malone is a member of the Communist Party of Great Britain from Jan, 1920 to Jan, 1922. 
 Cecil L'Estrange Malone is a member of the British Socialist Party from Jan, 1919 to Jan, 1920. 
 Cecil L'Estrange Malone is a member of the Labour Party from Jan, 1922 to Jan, 1922.

Answer:
Labour Party