Read the following paragraph and determine if the hypothesis is true:

Ben Marshall (born 8 June 1990) is a retired rugby union player from Ireland. He primarily played as a lock or in the back row. Marshall played for Irish provincial sides Leinster and Connacht in the Pro12, but was forced to retire in 2017 due to a concussion injury.

Hypothesis: Ben Marshall was born before the official start of summer.
Yes