Passage: On Christmas Day, Jack wakes up in a suburban New Jersey bedroom with Kate and two children. He rushes out to his condo and office in New York, but both doormen refuse him entrance and do not recognize him. Jack runs out into the street and encounters Cash driving Jack's Ferrari. Although Cash offers to explain what is happening, all he says is  a vague reference to "The Organization" and that Jack is getting "a glimpse" which will help him to figure out for himself what it's about.

Question: How many children do Jack and Kate have?
two