The following US Treasury benchmarks were available on a trading day:

UST $5\mathrm{.}12511/30/20274\mathrm{.}461\%$

UST $5\mathrm{.}37511/30/20294\mathrm{.}765\%$

UST $5\mathrm{.}2511/15/20345\mathrm{.}053\%$

UST $4\mathrm{.}759/15/20545\mathrm{.}934\%$

On the same day, the following trades were executed:

Issue Yield Benchmark Spread

Time Warner Cable TWC $2\mathrm{.}555/1/20274\mathrm{.}875\%$

McCormick MKC $2\mathrm{.}7512/15/20345\mathrm{.}732\%$

Goldman Sachs GS $2\mathrm{.}4511/1/20295\mathrm{.}624\%$

Identify the treasury benchmark for each issue and calculate the benchmark spread.