In reinforcement, the person or animal is not reinforced every time a desired behavior is performed.

Intermittent reinforcement is a condition in behaviorism and in this condition a compensation or retribution is not administered every time when the reaction is performed what we want and this term is started from the theories of B.F. Skinner on operant behaviorism and conditioning.

the students want to see the great sphinx of giza, which is very popular with tourists.

im not entirely sure what you're asking.