Sentence 1: I felt that my friend was not what he had been as he rambled on disconnectedly: "There were no stamps in his desk, but there might have been, eh, mon ami?

Sentence 2: My friend isn't acting like himself.
Is this second sentence entailed by the first?

Answer: yes

Sentence 1: no you don't want to do that it's got to be you know a laboratory that do quality control and and double check and i think that TI has has latched themselves up with an established group and and that would be true for any company that does it and and not to have a just a very casual thing it's got to be with a you know first class totally independent agency not local of course ours i think well i think it was in in the south somewhere but it wasn't even in Dallas you know the one that did us yeah

Sentence 2: TI has always worked with top class independent agencies.
Is this second sentence entailed by the first?

Answer: it is not possible to tell

Sentence 1: Three out of four lighted the menorah, an increase even over the 68 percent in Sklare's 1950s study.

Sentence 2: At least three lighted the menorah.
Is this second sentence entailed by the first?

Answer:
yes