Would the following phrase be considered positive or negative?

as an exploratory medical procedure or an autopsy

negative

Would the following phrase be considered positive or negative?

there is no substitute for on-screen chemistry , and

positive

Would the following phrase be considered positive or negative?

you suffer the dreadfulness of war from both sides

negative

Would the following phrase be considered positive or negative?

the film is hampered by its predictable plot and paper-thin supporting characters .
negative