<human>: Question: What species did the elephants at the Gash River seem to form a symbiotic relationship with?

Is "The elephants seemed to have formed a symbiotic relationship with olive baboons, with the baboons using the water holes dug by the elephants, while the elephants use the tree-top baboons as an early warning system." the correct answer?

OPTIONS:
- yes
- no
<bot>: yes