prov:value
| - When the golf ball includes an inner cover layer, this layer can include any materials known to those of ordinary skill in the art, including thermoplastic and thermosetting material, such as ionic copolymers or terpolymers of ethylene and methacrylic acid or acrylic acid partially or fully neutralized, having cations of zinc, sodium, lithium, magnesium, potassium, calcium, manganese, nickel or th
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