One string is not translated

Hi, thanks for this great theme.
I’m translating it into Lithuanian but there is a string that keeps appearing in English. It is in the comments.php file, line 28
printf( _nx( 'One thought on “%2$s”', '%1$s thoughts on “%2$s”', get_comments_number(), 'comments title', 'pure-and-simple' ),
I can rewrite this php file instead of original because I use child theme but it would be better to have full translation. Can you help?