definiens: is defined as ( i ) Net Sales for each Perioddivided by ( ii ) in the same Period . shall mean the period consisting of [ * * * ], which will beannounced by Distributor for each [ * * * ] . A [ * * * ] consists of [ * * * ] Periods . shall mean the total numberof Units sold by Distributor to third parties ( [ * * * ] ), less reasonable returns of Units . The purchase price hereunder shallbe settled in U.S. currency . Notwithstanding any other provision of this Section 4(a ), to the extent that NegativeDevelopments can be reasonably anticipated to adversely affect the market for the Product, then at any timethereafter Distributor may request that the Parties negotiate in good faith an appropriate reduction of the minimumpurchase price or other appropriate means to offset the impact of the Negative Developments