What are the keywords in the following sentence? a city which is located in the centre
centre, city, locate

What are the keywords in the following sentence? pattern with funny cats in pink colors with an inscription .
color, inscription, pattern

What are the keywords in the following sentence? the wave breaks about stones lying near to coast
break, coast, stone, wave

What are the keywords in the following sentence? family lying on the grass in a circle with closed eyes in the park
circle, family, park