You are developing an e-commerce application with PHP, Python, and JavaScript that has to be highly responsive. You want a script in Python that takes two lists of data points in four separate CSV files (csv1.csv, csv2.csv, txt3.txt, txt4.txt) and for each file type it performs the following: - Write code that reads multiple CSV/JSON files into memory as arrays. For example if you have two .csv files with data on different species of animals in them and a third one called "animals" which has numbers like this ["Dog", "Cat", "Lion"] then the script should find rows where `animal_type` contains either `"Cat"` or `"Lion"`, so that it can be used as input for the following operation: For each file, use a combination of CSV and JSON libraries. You have to write a Python function called "find_similarity_groups". The function should take these files (CSVs) and find rows in them which meet any one or more than two conditions from the following list: - A row contains at least three columns of data, where each column is separated by commas.