Conditional Questions and Which-Interrogatives Sophia Velissaratou Abstract: Analyses developed so far, failed to provide an adequate semantics for the interpretation of which-interrogatives of the form "Which P are Q?". In this paper a new logical language is developed, where which-interrogatives are expressed by universally quantifying over conditional interrogatives. Furthermore, a new semantic notion is introduced, that of an alternative. By means of the latter an adequate interpretation is given and shortcomings concerning answerhood and trivial interrogatives are sufficiently dealt with.