How many apps were last updated in January of 2018? Please write one translated review with positive sentiment for each app, if there's any.
updated in January of 2018 refers to Last Updated BETWEEN 'January 1, 2018' and 'January 31, 2018';
SELECT DISTINCT Translated_Review FROM user_reviews WHERE App IN ( SELECT App FROM playstore WHERE `Last Updated` BETWEEN 'January 1, 2018' AND 'January 31, 2018' ) AND Sentiment = 'Positive'