> 
> The company has provided a lot of information, **which enables** a
>  comprehensive investigation of the corruption case. 
> 
> 
> The company has
>  provided a lot of information, **enabling** a comprehensive investigation
>  of the corruption case.
> 
> 
> 

Do the two sentences mean the same? does the second one omit 'which is'? if so, the present tense has become present continuous. Wouldn't that change the meaning of the sentence?