// Matching dynamic objects
MATCH (p:Person)-[:ACTED_IN]->(m:Movie)
WITH collect([p, m]) as pairs
UNWIND pairs as pair

// WONT WORK
MATCH (pair[1])<-[:DIRECTED]-(p:Person)
// WORKS, alias expression with variable
WITH pair[0] as p0, pair[1] as p1
MATCH (p1)<-[:DIRECTED]-(p:Person)
RETURN p.name