Problem: At this time of year not much, it's been a dryish summer, and there's not a lot of water coming down. Say half a knot - and that's probably an over-estimate. If you say that a freely-floating body - and the weights would help a bit there because they'd keep it under water and out of any wind - moves down on the ebb at an average of a bit under two knots you'd not be far wrong. Can we infer the following? a freely-floating body moves down on the ebb at an average of a bit under two knots

Answer: Yes

Problem: A: I thought Carter was good too, and that was, yeah, B: Did you? I always liked him, I thought he was great at the time and I just couldn't get over the fact that Reagan beat him. you know, that I just couldn't believe that he got voted out. Can we infer the following? Carter got voted out

Answer: Yes

Problem: Jim waited. He waited a long time, and when the young doctor finally came out, it was almost dark. Jim could nonetheless tell by his anxious face that something was wrong. Can we infer the following? something was wrong

Answer: Yes

Problem: B: That was kind of a funny movie with, uh, Richard Dreyfuss and Bill Murray. A: Uh-huh. B: That was fun. A: Golly, I don't think that I've ever heard of that movie. Can we infer the following? he has heard of that movie

Answer:
No