exhibit 10. 19 occupancy services agreement by and between citibank, n. a. and national benefit life insurance company dated as of april 7, 2010 table of contents article i definitions section 1. 1definitions................................................................................................................. 1 section 1. 1 section 1. 1 definitions................................................................................................................. 1 definitions................................................................................................................. 1 article ii services section 2. 1services to be provided to nblic............................................................................ 5 section 2. 1 section