▁Once ▁the ▁most ▁pr estig ious ▁race ▁of ▁the ▁year , ▁the ▁event ▁had ▁been ▁increasing ly ▁boy c otted ▁by ▁the ▁top ▁rid ers , ▁and ▁finally ▁succ um bed ▁to ▁pressure ▁for ▁increased ▁safety ▁in ▁racing ▁events . ▁The ▁Grand ▁Prix ▁was ▁moved ▁to ▁England ▁in ▁ 1 9 7 7 ▁with ▁the ▁British ▁Grand ▁Prix ▁being ▁held ▁at ▁the ▁Silver stone ▁Circ uit . ▁ ▁Senior ▁T T ▁( 5 0 0 cc ) ▁classification ▁ ▁Junior ▁T T ▁( 3 5 0   cc ) ▁classification ▁ ▁Light weight ▁T T ▁( 2 5 0   cc ) ▁classification ▁▁ 5 0 0   cc ▁Side car ▁T T ▁classification ▁ ▁Non - ch ampion ship ▁races ▁▁ 1 0 0 0   cc ▁Side car ▁T T ▁▁ 1 0 0 0   cc ▁Open ▁Classic ▁T T ▁ ▁Production ▁T T ▁ ▁References ▁ ▁NOT E : ▁ ▁The ▁Is le ▁of ▁Man ▁T T ▁was ▁removed ▁from ▁the ▁international ▁calendar ▁and ▁replaced ▁by ▁a ▁proper ▁British ▁motor cycle ▁Grand ▁Prix . ▁ ▁Is le ▁of ▁Man ▁T T ▁Tour ist ▁Tro phy ▁Is le ▁of ▁Man ▁T T ▁Category : Is le ▁of ▁Man ▁T T <0x0A> </s> ▁Raymond ▁N d ong ▁S ima ▁( born ▁ 2 3 ▁January ▁ 1 9 5 5 ) ▁is ▁a ▁Gab on ese ▁politician ▁who ▁was ▁Prime ▁Minister ▁of ▁Gab on ▁from ▁February ▁ 2 0 1 2 ▁to ▁January ▁ 2 0 1 4 . ▁ ▁Career