What are the keywords in the following sentence? boats moored on the mud at low tide
boat, moor, mud

What are the keywords in the following sentence? An espresso machine, coffee cup, measuring cup and coffee on counter.
coffee, counter, cup

What are the keywords in the following sentence? night time visitor to the east coast ... us census designated place .
census, designate, place, visitor

What are the keywords in the following sentence? a colorful sky as clouds roll over the mountains at sunrise
cloud, mountain, roll, sky, sunrise