Table: sinclair_coefficients
Columns: weight_class_kg
world_record_kg
sinclair_coefficient
sinclair_total
rank

Question: What is the average sinclair coefficient with a Sinclair Total of 477.2772023, and a Weight Class (kg) larger than 105?
SQL: SELECT AVG("sinclair_coefficient") FROM sinclair_coefficients WHERE "sinclair_total" = 477.2772023 AND "weight_class_kg" > 105