regarding preposition 'of'

The preposition 'of' is indicating a quality or characteristic.

building of great height - very tall building
hole of great depth - very deep hole
cyanosis of increasing severity - cyanosis whose severity increases
bank balance of decreasing magnitude - bank balance that gets smaller

could you explain the other three sentences describing preposition role, especially 'of'. I have tried dictionary to find role of preposition in the sentences. lastly, is there a way understand them easily

pneumonia that develops during the course of another disease.
second most cause of community pneumonia.
is composed of hundreds of closely related