Please help me to write 2 queries in Big Query(SQL) on Google Cloud's Hacker News Data( https://cloud.google.com/bigquery/public-data/hacker-news ) .

Schema of the data:

id	INTEGER	Unique story ID
by	STRING	Username of submitter
score	INTEGER	Story score
time	INTEGER	Unix time
time_ts	TIMESTAMP	Human readable time in UTC (format: YYYY-MM-DD hh:mm:ss)
title	STRING	Story title
url	STRING	Story url
text	STRING	Story text
deleted	BOOLEAN	Is deleted?
dead	BOOLEAN	Is dead?
descendants	INTEGER	Number of story descendants
author	STRING	Username of author

a. On average which URL produced the best story in 2010?

b. List how many stories were posted by each author on nytimes.com and wired.com.