human
Considering the provided database schema and associated query, produce SQL code to retrieve the answer to the query. 
###Database Schema: Segment description, Date opened, Line(s), Endpoints, # of new stations, Length (miles)
###Question: What is the length  (miles) when pico to 7th st/metro center are the endpoints?
gpt
SELECT Length (miles) FROM table WHERE Endpoints = Pico to 7th St/Metro Center