How do I create an interactive page in which the user is forced to type in a paragraph and every word is evaluated?

Short Answer question? That allows you to set a correct answer, and the question will only be reported as correct when the given answer has exactly the same words, but also in the same sequence.

However I'm bit puzzled about your second sentence '...the user has to enter the data in the defined fields'? Do you want each field to be evaluated separately? Use Text Entry Boxes in that case. They have the advantage that you can take out the case sensitivity for correct answers.