<prompt> Translate the following text to EnglishKampuni kubwa za tumbaku zimedanganya kila hatua, zikikanusha sifa za kulevya za nikotini na uhusiano wa kisababishi kati ya lami ya tumbaku na kansa.  <response>: Big Tobacco has lied at every step, denying the addictive properties of nicotine and the causal link between tobacco tar and cancer. 