Content-based support for Persian learners of English

People learning a new language have problems with various aspects of the language they want to learn – with its grammar, with its pronunciation, with its morphology... CALL tools have been provided for most of these linguistic levels, but comparatively little has been done about helping students with problems of meaning. We will argue that language technology is now mature enough to support tools that address at least some semantic issues, and we will describe a tool that attempts to provide appropriate support for a specific class of learners.