Complex sentence: Beedrill is vulnerable to Fire, Flying, Psychic, Rock and-in Pokémon Red/Blue/Yellow-Bug, and strong against Grass, Fighting and-in Pokémon Gold/Silver/Crystal-Poison and Bug.
Split into simpler sentences: Beedrill is vulnerable to Fire, Flying, Psychic, Rock and-in Red, Blue and Yellow-Bug. It is strong against Grass, Fighting and-after Pokémon Gold, Silver, and Crystal-Poison and Bug.