what is the name of the recipe that requires no more than 45.0 to make and uses 0.5 of the ingredient?
(AND food.recipe (AND (JOIN (R food.recipe_ingredient.recipe) (JOIN food.recipe_ingredient.quantity 0.5^^http://www.w3.org/2001/XMLSchema#float)) (le food.recipe.preparation_time 45.0^^http://www.w3.org/2001/XMLSchema#float)))