Identify the product of the reaction $\mathrm{PhC}\equiv \mathrm{CMe} \stackrel{{\mathrm{H}}_3{\mathrm{O}}^{+},{\mathrm{Hg}}^{2+}}{\to } ?$

Alkynes are converted into ketones on reaction with Hg⁺² (mild oxidising agent) in presence of acid hydrolysis.