Complex sentence: In 1931, their own first starring feature, "Pardon Us" was released, although they continued to make both features and shorts until 1935, including their 1932 three-reeler "The Music Box" which won an Academy Award for Best Short Subject.
Split into simpler sentences: In 1931, their first starring feature, "Pardon Us" was released. They continued to make both features and shorts until 1935, including their 1932 three-reeler "The Music Box," which won an Academy Award for Best Short Subject.