Some people still claim that there is no firm evidence linking smoking with lung cancer. They claim to be the biggest company in the world, which is true if you include their subsidiaries.

https://dictionary.cambridge.org/zhs/%E8%AF%8D%E5%85%B8/%E8%8B%B1%E8%AF%AD-%E6%B1%89%E8%AF%AD-%E7%AE%80%E4%BD%93/claim