The Seyhan River (formerly written Seihan, Sihun; ancient name: Σάρος, Sarus) is the longest river in Turkey that is flowing into Mediterranean Sea. (http://en.wikipedia.org/wiki/Seyhan_River)
Any activity performed by individuals to produce goods or provide services, whether paid or unpaid. (FAOLEX. 2025. Glossary https://www.fao.org/faolex/)
The Yeşilırmak (Turkish: Yeşilırmak, "Green River"; classical Greek: Ίρις, Iris) is a river in northern Turkey. (http://en.wikipedia.org/wiki/Ye%C5%9Fil%C4%B1rmak_River)
