What are the keywords in the following sentence? politicians arrive on stage for the event in september .
arrive, event, politician, stage

What are the keywords in the following sentence? a beautiful rainbow appears through puffy clouds on a blue sky after the rain .
appear, cloud, rain

What are the keywords in the following sentence? unusual mute light and dark shades in the modern apartment with big windows
apartment, light, window

What are the keywords in the following sentence? must know tips for visiting tourist attraction
know, tip, visit