What are the keywords in the following sentence? creek flowing into the autumn forest with little waterfalls
creek, forest, waterfall

What are the keywords in the following sentence? Skiers at top of slope overlooking valley below.
overlook, skier, slope, valley

What are the keywords in the following sentence? panning shot waterfalls in the jungles in rainy season the flowing water coming from the mountains
mountain, pan, water, waterfall

What are the keywords in the following sentence? airing my sleeping bag next to a piano at work
air, bag, sleep