Point: your big idea about their big idea summed up in a topic sentence which supports your main contention (as outlined in your introduction)
Evidence: the quotations from the text which illustrate your point
Explanation: the analysis of the quotations – what they suggest and how this relates to your big idea about their big idea.
This looks very linear; it is not. You need to mix up the EE bit of PEE for a thorough response – there is no precise order or number of pieces of evidence you need but let your common sense prevail – you need quality evidence which supports your interpretation. You may need to quote widely from the text to draw out an idea or show the development or contrast of ideas.