List all the scientists' names, their projects' names, and the hours worked by that scientist on each project, in alphabetical order of project name, and then scientist name.
return scientists ;return names of #1 ;return projects of #1 ;return names of #3 ;return hours that #1 worked for each #3 ;return #2 ,    #4 ,  #5 ;return #6 sorted by #4 ,    #2
['select', 'project', 'project', 'project', 'group', 'union', 'sort']