Each operator in a sentence makes a contribution in information according to its likelihood of occurrence with its arguments. Highly expected combinations have low information; rare combinations have high information. The precise contribution of an operator is determined by its selection, the set of words with which it occurs with high frequency. The arguments "boots", "hats", "sheep", "grass" and "snow" differ in meaning according to the operators for which they can appear with high likelihood in first or second argument position. For example, "snow" is expected as first argument of "fall" but not of "eat", while the reverse is true of "sheep". Similarly, the operators "eat", "devour", "chew" and "swallow" differ in meaning to the extent that the arguments they select and the operators that select them differ.