A mutual fund manager, Fund A, has been evaluated for its performance over the past year. Fund A returned 12%, while the benchmark index returned 10%. The fund manager utilizes a strategy based on sector rotation, shifting allocations among various industry sectors based on market conditions. Over the year, Fund A had the following sector allocations and returns:
Calculate the contribution of each sector to Fund A's performance, and assess how well the fund manager’s sector allocation contributed to the overall outperformance against the benchmark. Additionally, provide a brief commentary on the implications of your findings for the investment strategy.