context: Tsarskoselskaya road (from Fontanka to Srednyaya Rogatka) (until the 1800s) Moskovskoe highway (from Moscow Gates to Srednyaya Rogatka) (1830s - 1939) Obukhovskaya street (from Sennaya to Fontanka) (1776— 1800s) Obukhov Prospect (from Sennaya to Fontanka) (1804-1878) Zabalkansky Prospect (from Sennaya Square to Moscow Gate) (1878-1900s) Zabalkansky Prospekt (from Sennaya Square to Roshchinsky Street) (1900s - 1918 ) International Avenue (from Sennaya Square to Roshchinskaya Street) (1918-1950s) Stalin Avenue (1950-1956) Moskovsky Avenue (since 1956)
question: What was the first name of Moskovsky Prospect?
answers.text: Tsarskoselskaya road