A lady with sunglasses on her head is wearing a blue top with a black top on top of it and is walking behind a man wearing a pink shirt .
It is certain that a lady with sunglasses is walking behind a man wearing a pink shirt .
It is certain that a lady with sunglasses is walking behind a man wearing a pink shirt .
It is highly unlikely that a lady with sunglasses is walking behind a man wearing a pink shirt .
A lady with sunglasses is walking behind a man wearing a pink shirt .