Find the first names and last names of the authors whose institution affiliation is "University of Oxford".
SELECT DISTINCT t1.fname ,  t1.lname FROM authors AS t1 JOIN authorship AS t2 ON t1.authid  =  t2.authid JOIN inst AS t3 ON t2.instid  =  t3.instid WHERE t3.name  =  "University of Oxford"
first names and last names of authors = SELECT DISTINCT fname, lname; institution affiliation 'University of Oxford' refers to WHERE inst.name = 'University of Oxford'; joining tables to link authors to their institution affiliations.