(40)a. *John-wa ainugo-no kenkyuu-tyuu, Mary-wa suwahirigo-no tyoosa-tyuu, ronbun-o kaita.
John-TOP Ainu-GEN research-mid, Mary-TOP Swahili-GEN survey-mid, paper-ACC wrote.
John wrote a paper during his study of Ainu and Mary did so during her survey of Swahili.