Does Fabrice Bellard knows any other language other than 'c' ?. Looks all his works are in 'c'. Just trying to look if there is a correlation among the 100x pro

Does Fabrice Bellard knows any other language other than 'c' ?. Looks all his works are in 'c'. Just trying to look if there is a correlation among the 100x programmers and the number of languages they know. Because being extremely proficient in a language is important to be highly productive.