What are the keywords in the following sentence? square straw bales stacked in a golden stubble field beside a woodland in late summer under an evening sky
bale, field, sky, stack

What are the keywords in the following sentence? garden centre in the city
centre, city, garden

What are the keywords in the following sentence? at the end of the pond you can see the building our condo is in .
building, condo, pond

What are the keywords in the following sentence? authors will partake in events throughout the weekend at festival of the book .
author, book, event