我想要一个带有这样标签的模板（dont_know_what在这里命名）：
Paragraph {% dont_know_what %}
Something written.
Paragraph {% dont_know_what %}
Some other text.
Paragraph {% dont_know_what %}
Again.
渲染：
Paragraph 1
Something written.
Paragraph 2
Some other text.
Paragraph 3
Again.
知道怎么做吗？