Premise: There was a rising mutter of shock and anger from the others, but he lifted his voice over it.

Hypothesis: He lifted his voice over the rising murmurs of anger and shock.
Answer: yes

Premise: and the feeling has always been that without the shirts and ties and suit coats that people were in a more relaxed atmosphere and you could have a freer exchange of information

Hypothesis: People working in causal environments are more open with expressing information.
Answer: it is not possible to tell

Premise: The people farmed and fished; on the dawning of the Bronze Age in 2700 b.c. , they began to work with metals.

Hypothesis: The people farmed until they learned to use water.
Answer: no

Premise: yeah that's right that's right i know

Hypothesis: "It's very wrong, I know."
Answer: no