Premise: People walking down sidewalk next to a line of stores .
Correct statement: It is likely that people are shoppong .
Incorrect statement: It is impossible that people are shoppong .
Correct statement: We believe that the people are chatting while walking .
Incorrect statement: It is impossible that the people are chatting while walking .
Correct statement: It is probably not the case that people are window-shopping .
Incorrect statement: We believe that people are window-shopping .
Correct statement: We believe that there are people shopping .
Incorrect statement: It is highly unlikely that there are people shopping .
Correct statement: It is probable that people walking down the sidewalk between shopping .
Incorrect statement: We doubt that people walking down the sidewalk between shopping .