What are the keywords in the following sentence? wind causes intricate patterns to form in the white sand
cause, pattern, sand, wind

What are the keywords in the following sentence? the sun began to rise from the sea in the morning .
morning, rise, sea, sun

What are the keywords in the following sentence? cat relaxing on the edge of a sofa
cat, edge, relax

What are the keywords in the following sentence? student writes a formula on the blackboard
blackboard, formula, student, write