human
Considering the provided database schema and associated query, produce SQL code to retrieve the answer to the query. 
###Database Schema: No. in series, No. in season, Title, Directed by, Written by, Original air date, Production code, U.S. viewers (millions)
###Question: what is the No in series when Rob wright & Debra j. Fisher & Erica Messer were the writers?
gpt
SELECT MIN No. in series FROM table WHERE Written by = Rob Wright & Debra J. Fisher & Erica Messer