No! The "in the 3 boxes you said" is supplied since i answered a question and i take it as a hypothesis, that is all the parts of the question excluding the parts that ask something, are taking as valid ones.
So the "in the 3 boxes you said" is not implied by me suddenly to make my statement "There are no 3 boxes!" correct, but it was already a valid one....


For example if Perosn-A asks: "Do you have 3 exactly dollars to give me at 3 May 2006?"
When i answer: "Yes i have" i already mean the 3 May 2006 and the 3 dollars and i don't have to repeat them, and i don't mean the "Yes i have", for any other date ot amount of money.....