Find everything on one topic across my pasted files

Task: Find every passage about [topic] in the files below and list them with where each one comes from. Context: I am looking for [what you need it for, for example the history of a decision]. Each file starts with its name on a line of its own. Rules: - Count a passage when it states a fact, a decision or an opinion about the topic, even if the word [topic] does not appear. - Quote at most 25 words per passage and give the file name. - Remove names of private people and any secrets from the files before pasting, and refer to them as written. - If two passages contradict each other, list both and mark the pair. - Say which files contain nothing on the topic, so I know they were checked. Result: A table with the columns file, quote and what it says in one line, ordered by file. Under it, one line each for contradictions and for files with nothing found. Material: [paste the files here, each starting with its file name]