What are the keywords in the following sentence? organism usually made of systems may be a single cell living
cell, live, organism

What are the keywords in the following sentence? give a heart shaped locket for holiday
heart, holiday, shape

What are the keywords in the following sentence? early morning in a mountain valley with green meadow and colorful clouds in beautiful light of sunrise
cloud, meadow, morning

What are the keywords in the following sentence? cows in a farm eating hay
cow, eat, farm, hay