What are the keywords in the following sentence? the tour of events also run on fully closed roads
close, event, road

What are the keywords in the following sentence? map showing the locations of the studied caves
location, map, study

What are the keywords in the following sentence? banner for a concert of classical music with violin
banner, concert, music

What are the keywords in the following sentence? mist floats over the summit of a mountain during sunrise
mist, mountain, summit