Complex sentence: The larger symmetry was named the Eight-fold Way by Murray Gell-Mann, was promptly recognized to correspond to the adjoint representation of SU (3), and immediately lead to Gell-Mann's proposal of the existance of quarks.
Split into simpler sentences: The larger symmetry was named the Eight-fold Way by Murray Gell-Mann, and was promptly recognized to correspond to the adjoint representation of SU (3). This immediately lead to Gell-Mann's proposal of the existance of quarks.