Siri in Japanese not talk about the same thing - Japanese Siri iPhone 4S

Good afternoon Hi, right now, is 8:03 Who are you I'm siri your virtual assistant What can you do? It rains today? Yes today is likely to rain What was the Nikkei average yesterday? Nikkei 225 yesterday yesterday's closing price was 9929.74 News of what was yesterday? Nikkei 225 yesterday's stock rose considerably Closing price was 9929.74 Nikkei average thank you I do not understand or search on the web? Is not necessary to Folks don't understand Not required Sorry not understand Not saying anything I stopped responding to why? Was not why? Do you search the web for it? No, thank you I'm sorry but I cannot understand No, thank you It is also ignored? Sorry not understand So, is no answer why suddenly Send this message to anyone? Contact name, phone number or Please provide the email address Siri Masaru I can't understand Send this message to everyone? No need to send the message. Send this message to anyone? Stop sending Send-San contact was not found Do not send I'm sorry but I cannot understand Send-san contact was not found End Sorry not understand Stop sending Sorry not understand Send-san contact was not found Thanks anyway Sorry not understand Send-san contact was not found.