Premise: The two people are crossing the river by walking on the rocks .
Correct statement: We believe that people running on stones .
Incorrect statement: We doubt that people running on stones .
Correct statement: It is impossible that two people walking through nature on a warm , sunny day .
Incorrect statement: It is probably the case that two people walking through nature on a warm , sunny day .
Correct statement: It is probably the case that there are trees along the riverbank .
Incorrect statement: We doubt that there are trees along the riverbank .
Correct statement: There is a better than even chance that two people from a party are crossing the river using rocks .
Incorrect statement: There is little chance that two people from a party are crossing the river using rocks .
Correct statement: There is a better than even chance that a couple is crossing some water to get to their campground .
Incorrect statement: It is impossible that a couple is crossing some water to get to their campground .