Feed it a shorter text (that fits in the window) and ask it to provide a short summary focusing on factual statements. Then hopefully all short versions could fit in the window. Find the contradiction—report the two contradicting factual statements and which section they appeared in. Locate the statement in the original text.
Perhaps you could do it in multiple steps.
Feed it a shorter text (that fits in the window) and ask it to provide a short summary focusing on factual statements. Then hopefully all short versions could fit in the window. Find the contradiction—report the two contradicting factual statements and which section they appeared in. Locate the statement in the original text.