Definition: Given a text, write a compressed version of it in a single sentence.
Input: We value your contributions to our programs. Lilly Endowment, a key supporter of the Center since 1973, has challenged us by offering a $100,000 grant, which we must match in 2000.
Output:
We value your contributions. Lilly Endowment, a supporter of the Center since 73, has challenged us by offering a $100,000 grant.