I would say that "constant cry" and "Chesterton's cat" are the obvious ones. However "echoed in our ears" is a pretty subtle one that you can definitely make a solid argument for.
The correct answer should be locate basic information.
When you are doing the preliminary research, you are just reading through a bunch of sources and information that you may or may not use while writing. You still aren't deciding which exact sources you are actually going to use, but rather just trying to find them and later on make that decision during another stage of writing.
5 animals
1 rabbit
2 monkeys
2 parrots in the hands of the monkeys.
elephants are not counted because they were only seen, not seen going towards the river.
He is right it is complex
