Question:
They were justifiably concerned, advocates say.

Does it follow that "Advocates say they were concerned."?
Answer:
yes

Question:
That is also the name of Johnson's recent book--a 175-page tract that pleads for still more subsidies while cloaking itself in high-mindedness.

Does it follow that "Johnson wrote a 175 page book recently."?
Answer:
yes

Question:
I know of the battle that took place here.

Does it follow that "This spot was home to the biggest battle in the Civil War."?
Answer:
it is not possible to tell

Question:
The second side is interpreting the attitude and behavior of other people toward oneself as civil.

Does it follow that "Another side is about seeing the behavior of other people as civil."?
Answer:
yes