A woman in a cowboy hat walks followed by a man in a blue baseball cap , a boy in a blue t-short and a woman in a green top .
It is probably the case that a woman in a hat is sitting alone in a park .
It is impossible that a woman in a hat is sitting alone in a park .
It is probably the case that a woman in a hat is sitting alone in a park .
A woman in a hat is sitting alone in a park .