Complex sentence: Pharma Plus has its origins in the Tamblyn chain of drugs stores which dates back to the early 1900s in Toronto, was owned by Loblaws grocers in the 1970s.
Split into simpler sentences: Pharma Plus has its origins in the Tamblyn chain of drugs stores which dates back to the early 1900s in Toronto. Tambly was owned by Loblaws grocers in the 1970s.