In this task, you're given a pair of sentences, sentence 1 and sentence 2. Your job is to determine if the two sentences clearly agree/disagree with each other, or if this can't be determined. Indicate your answer as yes or no respectively.

Q: Sentence 1: The volume of letters sent by households or household originated mail can be obtained from Table 1 by adding the volumes of HH-to-HH and HH-to-NHH mail. Sentence 2: These calculations do not show the volume of household letters. 

A: yes
****
Q: Sentence 1: Below, we describe our efforts during on-site visits and in the competition process to achieve this goal. Sentence 2: Under this statement you shall find our efforts during on site visits.

A: no
****
Q: Sentence 1: Or had he found something he wished to keep to himself?  Sentence 2: Or did he want to keep what he found to himself. 

A:
yes
****