Given the rationale, provide a reasonable question and answer. Step-by-step reasoning process: The rider might not be at a competition; he or she could be practicing.
 The question and answer:
Given the sentence "An equestrian rider is on a horse jumping over a plane that is on the ground." is it true that "An equestrian is riding a horse over a jump shaped like a plane at a competition."?
The answer is it is not possible to tell