Fixes some typos in queries.
Fixes some typos in queries.

fraterv/excercises-sgse15,fraterv/excercises-sgse15,fraterv/excercises-sgse15,fraterv/excercises-sgse15,fraterv/excercises-sgse15,fraterv/excercises-sgse15,fraterv/excercises-sgse15