What are the keywords in the following sentence? part of the old city walls around a city .
city, part, wall

What are the keywords in the following sentence? american football player and author in action during day of martial art at the school
action, author, player

What are the keywords in the following sentence? The gentleman in the wedding party is wolfing down the thickly frosted wedding cake,
cake, frost, party

What are the keywords in the following sentence? a student works with the help of his teacher at a computer
computer, help, student, work