What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? Name the inference rule being used: For all x_10, x_10 will play squash. For all x_10, x_10 will drive a car. For all x_10, x_10 will write a letter. For all x_10, if x_10 plays squash, then x_10 is a server.
For all x_10, x_10 is a server can be inferred via the universal modus ponens rule. For all x_10, x_10 will play squash and x_10 will drive a car can be inferred via the universal conjunction rule. For all x_10, x_10 will play squash and x_10 will write a letter can be inferred via the universal conjunction rule. For all x_10, x_10 will drive a car and x_10 will play squash can be inferred via the universal conjunction rule. For all x_10, x_10 will drive a car and x_10 will write a letter can be inferred via the universal conjunction rule. For all x_10, x_10 will write a letter and x_10 will play squash can be inferred via the universal conjunction rule. For all x_10, x_10 will write a letter and x_10 will drive a car can be inferred via the universal conjunction rule.