Complex sentence: The Falstaff was 5.3 m long and had a diameter of 92 cm. It weighed 5.09 tonnes of which 4.34 tonnes was the solid propellant.
Split into simpler sentences: The Falstaff was 5.3 metres long and had a diameter of 92 centimetres. It possessed a mass of 5.09 tonnes of which 4.34 tonnes was the solid propellant.