premise: um yeah all the ones i know my brother-in-law has three young kids seven and on down and they they go on family vacations and uh they go like to go skiing  the the middle girl doesn't get a whole lot of attention but uh this last ski trip they took um she had  contracted chicken pox first  and then she spread it to her her little younger sister and her brother and they got it just at the beginning of the
hypothesis: My brother-in-law's oldest child is seven.