There are several ways to check if the Russian response is grammatically correct:

1. Use an online translator: You can copy and paste the text into an online translator like Google Translate or Yandex Translate to see if the translation matches the original text.
2. Ask a Russian speaker: If you know someone who speaks Russian, you can ask them to read the text and let you know if it sounds correct.
3. Hire a professional translator: If you need a more thorough translation, you can hire a professional translator who is fluent in both English and Russian to provide an accurate translation of the text.
4. Use a language learning app: There are several language learning apps like Duolingo and Babbel that offer Russian courses. You can use these apps to improve your understanding of Russian grammar and vocabulary.
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