A non-transitory computer-readable recording medium storing a learning program that causes a computer to execute a process, a process includes acquiring a first input sentence and a first summary sentence into which the first input sentence is summarized, generating a second summary sentence to which the first summary sentence is partially-changed, and executing machine learning for a model to generate at least one summary sentence that corresponds to at least one input sentence, respectively, in response to an input of the at least one input sentence, such that a first probability of generating the first summary sentence in response to the input of the first input sentence becomes higher than a second probability of generating the second summary sentence in response to the input of the first input sentence, based on the first input sentence, the first summary sentence, and the second summary sentence.