Given a text, write a compressed version of it in a single sentence.
One example: Except for this small vocal minority, we have just not gotten a lot of groundswell against this from members, " says APA president Philip G. Zimbardo of Stanford University.
Solution is here: "Except for this small vocal minority, we have not gotten a lot of groundswell against this," says APA president Zimbardo.
Explanation: Both texts convey the same meaning that they have not gotten much groundswell against this except for small minority.

Now, solve this: Your contributions to the school in the past have been very important to us, and I sincerely hope that you will make a financial investment in the IU School of Dentistry this year. I have enclosed a brochure which explains more about our needs.
Solution:
Your past contributions have been very important to use. I hope you will continue to donate to IU School of Dentistry again. The enclosed brochure has a greater explanation.