person A: When my son was 14_comma_ he got a black belt in Karate. He had to work hard for that.
person B: Wow. You must be proud of him. Congratulations 
person A: Yes_comma_ it has been some years not_comma_ but I really was. He was in Karate for 8 years at that time.
person B: I see. It was many years of work. I guess his classmates were afraid o him_comma_ not everybody is black belt so young. 