Teacher:In this task you will be given an answer to a question. You need to generate a question. The answer given should be a correct answer for the generated question.
Teacher: Now, understand the problem? Solve this instance: A strong föhn wind can make snow one foot (30 cm) deep almost vanish in one day. The snow partly melts and partly evaporates in the dry wind. Chinook winds have been observed to raise winter temperature, often from below − 20 ° C (− 4 ° F) to as high as 10 -- 20 ° C (50 -- 68 ° F) for a few hours or days, then temperatures plummet to their base levels. The greatest recorded temperature change in 24 hours was caused by Chinook winds on 15 January 1972, in Loma, Montana; the temperature rose from − 48 to + 9 ° C (− 54 to + 49 ° F).
Student:
what is common between foehn and chinook winds