List by school id projects from schools located in the Union Pub School District I-9 that have a New York teaching fellow
located in the Union Pub School District I-9 refers to school_district = 'Union Pub School District I-9'; New York teaching fellow refers to teacher_ny_teaching_fellow = 't'
SELECT schoolid FROM projects WHERE school_district = 'Union Pub School District I-9' AND teacher_ny_teaching_fellow = 't'