Problem: Given the question: The ecologist moved from Aspen, where there was no air pollution, to Seattle which experienced a lot of air pollution. He started studying the weather there as well. Which city had rain with a lower pH?
++++++++++++++++++++++++++++++++
The answer is:
Seattle

Problem: Given the question: Two old friends were both oceanographers. They were both researching the levels of marine pollution in Earth's oceans. Vic studied the Arctic Ocean, while Dan studied the Pacific Ocean. Which friend observed fewer chemicals which were polluting the ocean?
++++++++++++++++++++++++++++++++
The answer is:
Vic

Problem: Given the question: Two meteorologists study Earth's climate. Jerry studies alpine climate, while James studies tropical climates. They both made great progress. Which person learned less about air expansion as it rises?
++++++++++++++++++++++++++++++++
The answer is:
James