Sentence 1: Spin Inside the Clinton Propaganda Machine , by Howard Kurtz (The Free Press).

Sentence 2: Howard Kurtz has also written several other books about him.
Is this second sentence entailed by the first?

Answer: it is not possible to tell

Sentence 1: But, anyway, here goes.

Sentence 2: The speaker is not going to do whatever they are talking about.
Is this second sentence entailed by the first?

Answer: no

Sentence 1: 'I am Dr. Hall, and this, as you doubtless know, is my private nursing home.'

Sentence 2: My name is Dr. Hall and I own this nursing home.
Is this second sentence entailed by the first?

Answer:
yes