Detailed Instructions: This task is about translating a given Spanish language sentence to English.
See one example below:
Problem: Leeuwenhoek y Huygens... ...fueron abuelos de la medicina moderna:
Solution: Leeuwenhoek and Huygens... ...are the grandfathers of much of modern medicine.
Explanation: This is a good example because the Spanish sentence has been translated correctly to English.

Problem: Si volvemos a la pantalla y miramos la regla de sustitucion, vemos que yo evalue el operador para obtener procedimientos, y los operandos para obtener los argumentos primero, antes de realizar la aplicacion.
Solution:
If we go back to the telestrator here and look at the substitution rule, we see that I evaluated the operator to get the procedures, and I evaluated the operands to get the arguments first, before I do the application.