Task: Class Definition Understanding (ontology: Earth_Environment/SWEET)

Which of the following definitions best describes 'outflow jet'?

A. A cold southwest wind of Simons Bay, South Africa.
B. Nocturnal cold-air jet flowing out of the mouth of a valley or canyon as it opens onto a plain.
C. In the Tirol, an east wind during March and April.
D. (Often contracted nor'wester.) A northwesterly wind (as Canterbury the concept).

Answer: Nocturnal cold-air jet flowing out of the mouth of a valley or canyon as it opens onto a plain.