U s ambassador emefiele el rufai witness groundbreaking of n10 5bn tomato plant in kaduna

I think there may be some inaccuracies in your statement.

Firstly, Emefiele is not a U.S. Ambassador. Godwin Emefiele is the Governor of the Central Bank of Nigeria (CBN), not a U.S. Ambassador.

Secondly, El-Rufai is the Governor of Kaduna State, not a U.S. Ambassador.

Lastly, I couldn't find any information on a $10.5 billion tomato plant being built in Kaduna, let alone a groundbreaking ceremony involving Emefiele and El-Rufai.

It's possible that you may have come across incorrect or outdated information. If you could provide more context or clarify what you're referring to, I'd be happy to help you fact-check and provide accurate information.