Which of the following diagrams indicates the best relation between Iron, Lead and Nitrogen?

All these three games are different from each other.

Sea is a part of Earth while Sun is different from these two.

All the pigeons are birds while dog is different from these.

Haryana is in India and India is in the World.

All the thieves are criminals while judge is different from these.

Some questions are asked in examination and some in practice but examination and practice are different from each other.

Bulb and Lamp are different from each other but light is obtained from both.

All the three are different from each other.

All the three are different from each other.

Hospital consists of nurse and patient but nurse and patient are of two different nature.