Teacher:You will be given a context and a verb separated with a newline character, and you have to answer if the given verb is static or not. We say a verb is static if it is about an event that doesn't change or it happens regularly. The output should be "Yes" if the verb is static and "No" otherwise.
Teacher: Now, understand the problem? Solve this instance: More than 16,000 dead pigs have been found floating in rivers that provide drinking water to Shanghai. A haze akin to volcanic fumes cloaked the capital, causing convulsive (coughing) and obscuring the portrait of Mao Zedong on the gate to the Forbidden City.  
 Verb: coughing
Student:
Yes