What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_7, x_7 is a politician. For all x_7, x_7 is a sailor. There is at least one x_7 for which x_7 is a scientist.
For all x_7, x_7 is a politician and x_7 is a sailor. For all x_7, x_7 is a sailor and x_7 is a politician. Some scientists are politicians. Some scientists are sailors. Some politicians are scientists. Some sailors are scientists.