International Data Group, Inc. (IDG) is a Chinese-owned, American-based media, data and marketing services and venture capital organization. IDG evolved from International Data Corporation (IDC) which was founded in 1964 in Newtonville, Massachusetts, by Patrick Joseph McGovern. IDC provides market research and advisory services and is now a subsidiary of IDG. Using only the above description and what you know about the world, "IDG evolved from International Data Corporation (IDC) which was founded between 1963 and 1965 in Newtonville, Massachusetts." is definitely correct, incorrect, or inconclusive? 