Which' The word 'which' can confuse international readers. International readers may not know what the word 'which' refers to. Sentences containing 'which' are often ambiguous. A comma can change the meaning of a sentence containing 'which'. Some complex and contradictory grammar rules apply to 'which'.
Many people using English as a foreign language are very good at English grammar.
So if yu accidentally break the grammar rules, you may confuse international readers. When you use 'which' in a sentence, check carefully. Cutting the sentence in two will often improve clarity. Sometimes this means repeating certain words. The quarantine zone, which was imposed on 22 May by the Ministry of Agriculture and Fisheries, will be lifted next Friday.