when do I use that that or which that

[Unregistered]

Can you tell me which of these is correct

"...and all of the upheaval that that entails" or
".... and all of the upheaval which that entails"

 

[Anglika]

From a stylistic point of view, the second is better in that it avoids an awkward repetition.

 

[rastirizvi@yahoo.com]

Hi Anglika, can we use two relative pronouns together?

 

[Anglika]

Give an example
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