A mountain climber reaches the top of a cliff .
A mountain climber reaches the top of a cliff , then places a flag for triumph .
A mountain climber reaches the top of a cliff.
A mountain climber reaches the top of a cliff, then places a flag for triumph.
There is no evidence to know that they are on the top of cliff, and there is no flag.
There is no evidence to know that they are on the top of cliff , and there is no flag .