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: The CO2 emitted by burning fossil fuel is the greenhouse gas that causes global warming.

Output: agrees


Input: Consider Input: Global warming is caused by human greenhouse gases.

Output: neutral


Input: Consider Input: We need to get rid of fossil fuel subsidies now.


Output: neutral