| 1 | The woman starts humming. | |
| 2 | "Man, that's messed up," he mutters. The woman starts humming. | |
| 3 | I' ve been humming ABBA all week. | |
| 4 | It should also pass the humming-query test. | |
| 5 | She continued to hum the song over and over. |
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