CREATE TABLE table_name_99 (hs_principal VARCHAR(255), wr_principal VARCHAR(255), ms_principal VARCHAR(255))
Who is the h.s. principal with Dave Lovering as w.r. principal and Marty Pizur as m.s. principal?
    
SQL: SELECT hs_principal FROM table_name_99 WHERE wr_principal = "dave lovering" AND ms_principal = "marty pizur"