Complex sentence: The India Navy's air wing has placed an order for 20 state of the art Boeing P-8 Poseidon Airborne Early Warning AEW/Marine Surveilance one of which has already been delivered to the Navy.
Split into simpler sentences: The India Navy's air wing has placed an order for 20 state of the art Boeing P-8 Poseidon Airborne Early Warning AEW/Marine Surveilance. One of which has already been delivered to the Navy.