What are the keywords in the following sentence? autumn leaves in a pattern over yellow
autumn, leave, pattern

What are the keywords in the following sentence? fans have joined their counterparts in opposing the proposal to play matches abroad
fan, join, match

What are the keywords in the following sentence? detail of ceiling and chandelier in the old directors dining room .
chandelier, detail, room

What are the keywords in the following sentence? This painting depicts zebras grazing on an arid field.
field, grazing, zebra