Fix MySQL Query Syntax

I have a short SELECT statement that throws “#1241 – Operand should contain 1 column(s).” What I want is simple: return nombre, apellido, especialidad1, especialidad2 and categoria from table nancy, but only for the rows whose (nombre + apellido) pair also appears in table visitas5... (Budget: $10 - $30 USD, Jobs: Data Analysis, Data Integration, Data Processing, Database Administration, Database Development, Database Management, Database Programming, MySQL, PHP, SQL)