Question: It is instructive to note that the 1947 legislation creating DOD was further changed by the Congress in 1949, 1953, 1958, and 1986 in order to improve the department's structural effectiveness.
The 1947 legislation that created DOD was changed by Congress multiple times between 1949 and 1986.

Answer: yes

Question: These parents pressure school systems to be more rigorous and give more homework.
These parents want their children to be more educated.

Answer: yes

Question: Yes, she has.
She hasn't.

Answer:
no