3 sentences

1. 我们发现了罪魁祸首。

   wǒ​men fā​xiàn le zuì​kuí​huò​shǒu.

   We found the culprit.

   Source: OpenSubtitles

2. 天气是罪魁祸首。

   tiān​qì shì zuì​kuí​huò​shǒu.

   The weather is the culprit.

   Source: CCMatrix

3. 但是，真正的罪魁祸首还没找到。

   dàn​shì, zhēn​zhèng de zuì​kuí​huò​shǒu hái​méi zhǎo dào.

   The real culprit has not been found.

   Source: CCMatrix