Task: Question Generation
Input (English): Green shored up the 1984 roster with a series of transactions. In December, 1983 Scott Sanderson was acquired from Montreal in a three-team deal with San Diego for Carmelo Martínez. Pinch hitter Richie Hebner (.333 BA in 1984) was signed as a free-agent. In spring training, moves continued: LF Gary Matthews and CF Bobby Dernier came from Philadelphia on March 26, for Bill Campbell and a minor leaguer. Reliever Tim Stoddard (10–6 3.82, 7 saves) was acquired the same day for a minor leaguer; veteran pitcher Ferguson Jenkins was released.
Output (English): When was Scott Sanderson acquired from Montreal?