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.

[EX Q]: Sentence 1: The fruit and leaves feed crabs whose waste products in turn feed fish, prawns, and mollusks. Sentence 2: Without the crabs' waste, fish, mollusks, and prawns wouldn't have as much food.
[EX A]: no

[EX Q]: Sentence 1: They saw Vrenna, her hood pulled low over her head, staring at the back of one of the huge trees. Sentence 2: Vrenna was staring back at one of the huge trees.
[EX A]: yes

[EX Q]: Sentence 1: Also, if State and Federal excise taxes remain at the current levels, tax revenues will decrease over time because of decreased sales. Sentence 2: If excise taxes do not change from the current State and Federal levels, tax revenues will eventually decrease due to lower sales.
[EX A]:
yes