Complex sentence: Both the Fifth Dimension's version and the Gaye/Terrell version were modest charted hits with the original performing better, reaching number twenty-five on the pop singles chart, while Marvin and Tammi's cover reached number fifty-six pop and never charted R&B.
Split into simpler sentences: Both the Fifth Dimension's version and the Gaye/Terrell version were modest charted hits. The original performed better reaching number twenty-five on the pop singles chart, while Marvin and Tammi's cover reached number fifty-six pop but never charted R&B.