It is not only the grammar. The whole article is a mess. I dont know how they creat articles in wikipedia. Probably using some cut and paste. What do you expect from a source where everybody can make any edits. Try to read the article "central caspian dictatorship". You will never understand who was fighting with whom, who was behind whom, who attacked whom and why. But they are very politically correct in wikipedia. For example when they say Armenians massacred Azeris during the central caspian dictatorship then they will also mentioned that Azeris killed Armenians back after recapturing Baku. If you edit any incorrect facts you will be reverted immediately by Grandmaster and Khoikhoi. I dont know whats going on with the whole part of Armenian Azerbaijani history but I know one thing Khoikhoi and Grandmaster are here to cite what they want, correct and edit whom they want, revert anything they want.