dialogue: M: Can you recognize that woman, Betty? W: I think I can, Henry. It must be Jenny Brown, the actress. M: I thought so. She is beautiful, isn't she? W: Yes, she is. She doesn't look old at all. M: I read she's twenty-nine, but she must be at least forty. W: I'm sure she is. She was a famous actress when I was still a schoolgirl. M: That was a long time ago, wasn't it? W: Not that long ago! I am not more than twenty-nine myself!
question: How old can the actress be?
choice: She is not more than 40. She is no more than 29. She is at least 40.
answer: She is at least 40.