分析一篇英语文章，统计其中每个单词的出现次数，并返回出现次数最多的前5个单词。


文章内容（示意）：
This is a sample text. It contains some simple, easy-to-read sentences. The purpose of this text is to demonstrate how to analyze word frequencies in a piece of text.
Here are the top 5 most frequently occurring words in the text:

1. "this" - 2 times
2. "text" - 2 times
3. "is" - 1 time
4. "a" - 1 time
5. "sample" - 1 time

Note: Punctuation and capitalization have been ignored in this analysis.