Step 1: Hyperboloid.
The Cathedral of Brasilia by Oscar Niemeyer uses a striking hyperboloid shape.
\[
P \Rightarrow 5
\]
Step 2: Geodesic Dome.
The Biomes at the Eden Project in the UK use geodesic dome structures designed by Nicholas Grimshaw.
\[
Q \Rightarrow 3
\]
Step 3: Diagrid Structure.
The Hearst Tower, New York by Norman Foster is one of the most famous examples of diagrid structural systems.
\[
R \Rightarrow 4
\]
Step 4: Umbrella Structures.
Palazzo del Lavoro, Turin by Pier Luigi Nervi employs umbrella roof structures.
\[
S \Rightarrow 2
\]
\[
\boxed{P-5, \ Q-3, \ R-4, \ S-2}
\]
Match the buildings in Group I with their corresponding structural systems in Group II. 
