You will be given a passage, and your task is to generate a Yes/No question that is answerable based on the given passage.

[Q]: The return address is not required on postal mail. However, lack of a return address prevents the postal service from being able to return the item if it proves undeliverable; such as from damage, postage due, or invalid destination. Such mail may otherwise become dead letter mail.
[A]: do you need to put return address on mail?


[Q]: The Darién Gap is a break in the Pan-American Highway consisting of a large swath of undeveloped swampland and forest within Panama's Darién Province in Central America and the northern portion of Colombia's Chocó Department in South America. The gap begins in Yaviza, Panama and ends in Turbo, Colombia, and is 106 km (66 miles) long. Roadbuilding through this area is expensive and the environmental cost is high. Political consensus in favor of road construction has not emerged. Consequently, there is no road connection through the Darién Gap connecting North America with South America and it is the missing link of the Pan-American Highway.
[A]: can you drive between north and south america?


[Q]: Whispering is an unvoiced mode of phonation in which the vocal folds (vocal cords) are abducted so that they do not vibrate; air passes between the arytenoid cartilages to create audible turbulence during speech. Supralaryngeal articulation remains the same as in normal speech.
[A]:
do you use your vocal cords to whisper?