Question: Who helped to develop the national flag that consists of a red field with a white square at is center entre in the ratio of 1:2:1, in the middle of which is featured a stylized, red, 11-pointed maple leaf charged in the centre?
Sentence (from "John Matheson"): John Ross Matheson, {'1': ", '2': ", '3': ", '4': "} (November 14, 1917 – December 27, 2013) was a Canadian lawyer, judge, and politician who helped develop both the maple leaf flag and the Order of Canada.
Relevant evidence: Yes