human
Schema:
mountain (id, name, Height, Prominence, Range, Country)
camera_lens (id, brand, name, focal_length_mm, max_aperture)
photos (id, camera_lens_id, mountain_id, color, name)
Please answer with SQL.
assistant
Sure, I understand.
human
Which mountains are in the country 'Ethiopia'?
assistant
SELECT * FROM mountain WHERE country = 'Ethiopia';
human
Which camera lenses are used to take photos of these mountains? Return the camera lens ids.
assistant
SELECT T2.camera_lens_id FROM mountain AS T1 JOIN photos AS T2 ON T1.id = T2.mountain_id WHERE T1.country = "Ethiopia" ;