question:  What is the relationship between Lanfierre and MacBride?
context: In the ensuing contretemps they emptied his rear pants pockets, got his wristwatch and restored the contents of the handkerchief pocket. It was this rather than skill that enabled the police to maintain such a tight surveillance on him, a surveillance that went to the extent of getting his fingerprints off the postman's bag, and which photographed, X-rayed and chemically analyzed the contents of his pockets before returning them. Lanfierre's job was to ferret out aberration. Lanfierre was almost proud of Humphrey Fownes. In some ways MacBride was a barbarian. Lanfierre had held out on Fownes for months. It was only with the greatest reluctance that he finally mentioned Fownes to MacBride. "It's like this, MacBride. Strong winds, MacBride. And if there was a house sitting on such a mountain and if winds did blow, it would shake exactly the way that one does. MacBride whistled. "No, you don't need a rest," MacBride said. MacBride and Lanfierre both leaned forward, as if waiting for the ghostly babble of voices to commence. The house could have been preparing to take off and sail down the.... MacBride looked at Lanfierre and Lanfierre looked at MacBride and then they both looked back at the dancing house. "Is he in with that bunch?" Lanfierre nodded. "I can't wait to see what he's got in there," Lanfierre murmured, watching the house with a consuming interest. He watched as they spun and flashed in the darkness, and then set them for seven o'clock in the evening, April seventh, any year. Or, as Fownes hoped it might appear, the illusion of the domed city vanished and was replaced by a more satisfactory, and, for his specific purpose, more functional, illusion. The sun and moon both looked down upon a garden that was itself scintillant, composed largely of neon roses. The house began to smell like an immensely concentrated rose as the moon shifted to People Will Say We're In Love .
output:  Lanfierre is the aberration expert, and MacBride is a cop
options:  Lanfierre is training in MacBride  MacBride is Lanfierre's superior  they are partners working on the case  Lanfierre is the aberration expert, and MacBride is a cop