The core idea
Interest-rate swaps allow investors to exchange fixed and floating rate exposures without buying or selling the underlying government bond.
What is happening underneath
Swap rates provide an alternative interest-rate curve used for hedging and pricing.
How investors should read it
The relationship between swap and sovereign curves contains information about balance sheets, collateral and market demand.
The same market move can carry different information depending on which maturity, issuer and risk premium is changing. Read the question together with the underlying concepts rather than treating one price move as a universal signal.