Folks. You have to breakdown the para and read them sentence by...

Folks. You have to breakdown the para and read them sentence by sentence. The "If not agreed" applies to the 3rd sentence only IMO. 

* February to June 2019 to be based on the average October to December 2018 lithium carbonate pricing.
* July to September 2019 will be based on the average of May to June 2019 lithium carbonate pricing (referenced to the Argus Pricing Index).
* October to December 2019, the pricing formula will be referenced from both lithium carbonate and lithium hydroxide prices. If not agreed, the higher of US$880 per dmt or the floating price will apply.
* Price for 2020 to 2022 will be set by a formula with reference to market prices for comparable spodumene.