Is it possible that "playful" determines "river"?
I’m leaving early tomorrow morning, finally! I’ve always wanted to explore the Amazon, the unknown and mysterious world. At this hour, the great Emerald Amazon Explorer should be at the port waiting for me to get on board. Freshwater dolphins will escort me on the playful river, and 500 species of birds, half a dozen species of monkeys, and numerous colorful butterflies will welcome me into their kingdom.
I wonder how the adjective "playful" , which indicates the mood of people, determines the word "river"?
Please help me!