Question: Which band, Marianas Trench or Car Seat Headrest, signed to Matador Records in 2015?
Sentence (from "Marianas Trench (band)"): The band consists of members Josh Ramsay (lead vocalist, rhythm guitarist, pianist, songwriter, and occasional drummer), Matt Webb (lead guitarist and backing vocalist), Mike Ayley (bass guitarist and backing vocalist), and Ian Casselman (drummer, percussionist, and backing vocalist).
Relevant evidence: No