A yes-no interrogative (clause) is an interrogative to which yes or no is the only possible answer. Any other reaction on the part of the hearer (‘Of course’, I don’t think so’) are responses, but not answers. This clause type can also be referred to as a total interrogative (the scope of the interrogation is the entire clause rather than just one part of it) or a closed interrogative (the number of answers is limited to two): Do you live here? Is everything all right? Is there a problem? (AEG Ch. 2)