Question: I see. A faint expression of relief swept over John's face.
I look of horror fell upon John's face.

Answer: no

Question: The election will have to be rerun, but Carey may have the advantage because he triumphed in the strike.
The election will have to be done again and this time Carey might have an advantage.

Answer: yes

Question: concerns are the risks in using other people's studies and in generalizability.
There are other risks, but concerns are the most prominent of all the risks.

Answer:
it is not possible to tell