Questions (both with an interrogative pronoun and yes/no questions) have the same structure as affirmative sentences, but with intonation rising at the end. In the formal register, the question particle "-ka" is added. For example, "ii desu" () "It is OK" becomes "ii desu-ka" () "Is it OK?". In a more informal tone sometimes the particle "-no" () is added instead to show a personal interest of the speaker: "Dōshite konai-no?" "Why aren't (you) coming?". Some simple queries are formed simply by mentioning the topic with an interrogative intonation to call for the hearer's attention: "Kore wa?" "(What about) this?"; "O-namae wa?" () "(What's your) name?".