What are the keywords in the following sentence? A lone bear walking up a grassy hillside.
bear, hillside, walk

What are the keywords in the following sentence? these crepuscular rays were formed by sunlight projected between clouds in a smoky sky at sunset .
cloud, form, sky, sunset

What are the keywords in the following sentence? parade their horses and ponies for sale in the centre of town
horse, pony, sale

What are the keywords in the following sentence? image titled cite a website in text
cite, image, text, title, website