Read the passage and find if the passage agrees, disagrees, or has a neutral stance on whether Global warming is caused by human activities. Answer only with keyword (a) agrees - if passage agrees with the target (b) disagrees - if passage disagrees with the target (c) neutral - if the given passage neither agrees nor disagrees with the target. You don't need to use external knowledge in this task, and you have to answer based on the given passage.

Example Input: I was surprised to learn that shortage of good climate scientists is a global problem.
Example Output: neutral

Example Input: Oil will make climate change worse, and that the pipeline could break and spill oil into waterways like Montana's Missouri River.
Example Output: agrees

Example Input: The Southern Hemisphere must be balancing the warming of the Northern Hemisphere by becoming colder (and thus, net global warming is zero).
Example Output:
disagrees

