What are the keywords in the following sentence? stacks of magazines and books on a table
book, magazine, table

What are the keywords in the following sentence? celebrity donned a strapless black silk gown from spring collection
celebrity, don, gown

What are the keywords in the following sentence? rugby player looks on before the nations match
look, match, player

What are the keywords in the following sentence? time lapse behind lake and hill in the morning
hill, lapse, morning