Definition: In this task you will be given a passage and a yes/no question based on the passage. You should answer the question using the information from the passage.
Input: passage: Presently, oceans are CO sinks, and represent the largest active carbon sink on Earth, absorbing more than a quarter of the carbon dioxide that humans put into the air. The solubility pump is the primary mechanism responsible for the CO2 absorption by the oceans.
 question: oceans are a global sink for carbon dioxide?

Yes