Several people jogging outside on a sunny day in what seems to be a neighborhood , could be part of a marathon .
It is highly unlikely that a group of people are running a marathon to raise money for cancer research .
It is highly unlikely that a group of people are running a marathon to raise money for cancer research .
There is a better than even chance that a group of people are running a marathon to raise money for cancer research .
A group of people are running a marathon to raise money for cancer research .