What are the keywords in the following sentence? humans share a common ancestor with other primates .
ancestor, human, share

What are the keywords in the following sentence? automobile model is driven around tourist attraction .
attraction, drive, model

What are the keywords in the following sentence? drawing draw a line intersecting a plane in point .
intersect, line, plane, point

What are the keywords in the following sentence? provides blankets and stuffed toys to those in hospitals .
hospital, stuff, toy