Your response should be in English, and in all lowercase letters. no capital letters are allowed. answer with [relation] [num_words] words. [relation] is "at least" and [num_words] is 50. include the keyword "understanding" in your response. your answer must contain a title, wrapped in double angular brackets, such as <<a day in the park>>. in your response, the letter "e" should appear at least 10 times.

user