SELECT T2.name FROM assignedto AS T1 JOIN scientists AS T2 ON T1.scientist  =  T2.ssn
Find the name of scientists who are assigned to some project.
[Schema (values) (types)]: | scientist_1 |  Scientists : ssn (text) , name (number) | Projects : code (text) , name (number) , hours (text) | AssignedTo : scientist (text) , project (number);