Task: Paraphrasing
Input (English): Question: If the dna from all 46 chromosomes in a human cell nucleus was laid out end to end, it would measure approximately how long? 
Answer: two meters. 
Sentence: If the dna from all 46 chromosomes in a human cell nucleus was laid out end to end, it would measure approximately two meters long.
Output (English): Humans have 46 chromosomes in their somatic cells.  The DNA from all the chromosomes in a cell, if you stretched it out and laid it end to end, would be about two meters long.