Which 8 times grand slam singles champion became Andy Murray's coach in 2011?
which 8 times grand slam singles champion became andy murray's coach in 2011
FreebaseQA-train-1123.P0
andy murray
andy murray
m.03wc52
base.schemastaging.athlete_extra.coaches..base.schemastaging.coach_athlete_relationship.coach
m.01s25n
ivan lendl