<human>: Question: What percent of its stake in Woodside Petroleum did Shell sell in June 2014?

Is Shell sold 9.5% of its 23.1% stake in Woodside Petroleum in June 2014 and advised that it had reached an agreement for Woodside to buy back 9.5% of its shares at a later stage. a good answer to this question?

OPTIONS:
- yes
- no
<bot>: yes