Premise: Four men waiting in a area , holding ladders .
Correct statement: Chances are about even that four men are about to climb a roof .
Incorrect statement: It is impossible that four men are about to climb a roof .
Correct statement: It is probably the case that four men about to work
Incorrect statement: We doubt that four men about to work
Correct statement: Chances are about even that the four men were waiting to begin construction .
Incorrect statement: It is impossible that the four men were waiting to begin construction .
Correct statement: Chances are about even that a group of workmen are getting ready to begin repainting a building .
Incorrect statement: It is highly unlikely that a group of workmen are getting ready to begin repainting a building .
Correct statement: It is highly likely that a few men held ladders for their jobs
Incorrect statement: There is almost no chance that a few men held ladders for their jobs