Given the task definition and input, reply with output. In this task, you're given a question, along with a context passage which has extra information available on certain terms mentioned in it, i.e., the proper nouns in the passage. Your job is to determine whether information from more than one term is needed to answer the question. Indicate your choice as 'a' for Yes or 'b' for No.

Question: Who is considered the founder of Syriac Christianity? Passage:West Syriac liturgies represent one of the major strains in Syriac Christianity, the other being the East Syriac Rite, the liturgy of the Church of the East and its descendants. Distinct West Syriac liturgies developed following the Council of Chalcedon (451), which largely divided the Christian community in Antioch into Melkites, who supported the Emperor and the Council and adopted the Byzantine Rite, and the non-Chalcedonians, who rejected the council and developed an independent liturgy the West Syriac Rite. An independent West Syriac community that grew around the monastery of Saint Maron eventually developed into the Maronite Church, which uses its own Maronite Rite. A variant of the West Syriac Rite, the Malankara Rite, developed in the Malankara Church of India and is still used in its descendant churches.
b