The Large Hadron Collider (LHC) costs around 5 billion euros. That would be around 10 billion SGD.
That is for a particle accelerator with no immediate economic benefit, other than supporting their local engineering companies. The money probably aided their local companies to develop advanced technologies. (detectors/sensors/superconducting magnets etc.) But then they're probing at the very edge of known science, where nobody has been before.
In contrast Biopolis was constructed at around 0.5 billion SGD. They probably had another 0.5 billion of spare cash to spend.
They probably spent it on getting overrated and expensive foreign talent to come here, and also buying equipment from overseas. Also to hire cheap postgrads from china, who will probably go elsewhere after a few years here. What do they do? Just repeat experiments that other people have "been there, done that" thousands of times over.