Premise: Instead, he sent letters to the House of Representatives and the Senate on August 2, 2001, to inform them of GAOas actions and to serve as a response to GAOas July 18 letter.

Hypothesis: He sent letters to the House of Representatives and the Senate on August 2, 2001 instead, to inform the of GAOas actions, and to also serve as a response to GAOas July 18 letter.
Relation: entailment