Given the rationale, provide a reasonable question and answer. Step-by-step reasoning process: Children cannot ride horses on sans at the same moment they are in the grass.
 The question and answer:
Test for natural language inference.
Premise: "Two children are riding horses over sand near a white fence."
Hypothesis: "Children are riding horses in the grass."
Is the hypothesis entailed by the premise?
Options:
- yes
- no
- it is not possible to tell
The answer is no