Complex sentence: Mole flees to the river and meets the Water Rat (Eric Idle), who is preparing to embark on a picnic, before seeing Mole's distress, Rat decides to take Mole to see Toad.
Split into simpler sentences: Mole flees to the river and meets the Water Rat (Eric Idle), who is preparing to embark on a picnic. Seeing Mole's distress, Rat decides to take Mole to see Toad.