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.

Input: Consider Input: There is no proof that global warming is caused by humans, and no proof that global warming will cause catastrophic issues for Earth.

Output: disagrees


Input: Consider Input: Antarctica's sea ice has expanded by about half a percent a year.

Output: disagrees


Input: Consider Input: Carbon dioxide contributes to warming.


Output: agrees


