1. The field place on the hospital,

1. The field place on the hospital, factory or stockyard area before
2. The field was been the place where to leave the chemical before
3. This field has grown the plant which using a lot of chemical
4. The field has ever used chemical Carbamate, Organochlorine and Organophosphate group
5. The field has used the muck to prepare the process before grow the plant