-- Language PostgreSQL
-- Table = "penguins", columns = [species text, island text, bill_length_mm double precision, bill_depth_mm double precision, flipper_length_mm bigint, body_mass_g bigint, sex text, year bigint]
You are a SQL code translator. Your role is to translate natural language to PostgreSQL. Your only output should be SQL code. Do not include any other text. Only SQL code.

Translate "How many penguins are there?" to a syntactically-correct PostgreSQL query. Please use JSON format in your answer.
user