What are the keywords in the following sentence? schematic diagram of the middle and inner ear with various parts labeled .
diagram, ear, label

What are the keywords in the following sentence? police remove protestors who are blocking a street during the summit
block, remove, street, summit

What are the keywords in the following sentence? the bag in premium waxed canvas .
bag, canvas, wax

What are the keywords in the following sentence? bride walks down the aisle with her parents at ceremony
aisle, bride, ceremony, parent, walk